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Chaine de conversion de base en base Production d'une
chaine de nombres, l'un déduit du précédent par une conversion en une autre
base. |
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En base
5, le premier nombre posé est le 5. Ce nombre
décimal est converti en base 5: 10. Même
procédé sur le nombre 10 considéré comme décimal, converti en base 5: 20 Répétition
du procédé. Les
nombres deviennent vite très grands. |
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Chaine en
base 5 |
5, 10, 20, 40, 130, 1010,
13020, 404040, 100412130, 201201142010, 11244024443021020,
43242234044024403133040, 141203414122301104243434200224130,
4441002144331214323141010140343411220224133010,
130440030412201042300104400312324403304312331213043413004334224020 …
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Base 2 |
2, 10, 1010, 1111110010,
1000010001110100011000101111010, |
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Base 3 |
3, 10, 101, 10202, 111222212,
21202021200012012, 10210222101010102122200101012201100 |
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Base 4 |
4, 10, 22, 112, 1300, 110110, 122320132,
13102213110010, 2332222120300201203322 |
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Base 6 |
6, 10, 14, 22, 34, 54, 130, 334,
1314, 10030, 114234, 2240510, 120004422, 15524040010, 11044234015334,
35253352344013542, 1335041342253501254130, |
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Base 7 |
7, 10, 13, 16, 22, 31, 43, 61, 115,
223, 436, 1162, 3250, 12322, 50632, 300421, 2360602, 26031136, 434155345,
13521155011, 656031631000, 65253034566544, 16513243012141246,
13066154302600036600, 32251566130104220405204 |
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Base 8 |
8, 10, 12, 14, 16, 20, 24, 30, 36,
44, 54, 66, 102, 146, 222, 336, 520, 1010, 1762, 3342, 6416, 14420, 34124,
102514, 310162, 1135622, 4252006, 20160546, 114720042, 665476452, 4752456544,
43321135540, 502611010664, 7240574662150, 151272370273006 |
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Base 9 |
9, 10, 11, 12, 13, 14, 15, 16, 17,
18, 20, 22, 24, 26, 28, 31, 34, 37, 41, 45, 50, 55, 61, 67, 74, 82, 101, 122,
145, 171, 210, 253, 311, 375, 456, 556, 677, 832, 1124, 1478, 2022, 2686,
3614, 4855, 6584, 10025, 14668, 22107, 33283, 50581, 76341, 125643, 211313,
351772, 585477, 1082110, 2028334, 3731314, 7016354, 14173558, 28602417,
58734123, 132460056, 306220030, 710176817, 1744281402, 4446150226,
12425184447, 35057152676, 110435185602 |
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Suite |
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Voir |
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Sites |
OEIS A023383 -
a(n+1) = a(n) converted to base 10 from base 5 (written in base 10) OEIS
A023390 - a(n+1) = a(n) written in base 7 (read in base 10); a(1) = 7 OEIS A023392 - a(n+1) = a(n) converted to base 10 from base 9 (written in base 10) – Autres conversions disponibles. |
Cette page |
http://villemin.gerard.free.fr/Wwwgvmm/Iteration/BaseBase.htm
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