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Search: id:A001021
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| A001021 |
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Powers of 12.
(Formerly M4869 N2084)
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+0
10
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| 1, 12, 144, 1728, 20736, 248832, 2985984, 35831808, 429981696, 5159780352, 61917364224, 743008370688, 8916100448256, 106993205379072, 1283918464548864, 15407021574586368, 184884258895036416, 2218611106740436992
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Central terms of the triangle in A100851. - Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Mar 04 2006
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REFERENCES
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S. Plouffe, Approximations de S\'{e}ries G\'{e}n\'{e}ratrices et Quelques Conjectures}, Dissertation, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.
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LINKS
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S. Plouffe, Approximations de S\'{e}ries G\'{e}n\'{e}ratrices et Quelques Conjectures}, Dissertation, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.
S. Plouffe, 1031 Generating Functions and Conjectures, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.
Tanya Khovanova, Recursive Sequences
Y. Puri and T. Ward, Arithmetic and growth of periodic orbits, J. Integer Seqs., Vol. 4 (2001), #01.2.1.
P. J. Cameron, Sequences realized by oligomorphic permutation groups, J. Integ. Seqs. Vol. 3 (2000), #00.1.5.
INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 276
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FORMULA
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G.f.: 1/(1-12x), e.g.f.: exp(12x)
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MAPLE
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A001021:=-1/(-1+12*z); [Conjectured by S. Plouffe in his 1992 dissertation.]
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CROSSREFS
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Sequence in context: A056330 A004191 A051051 this_sequence A000468 A076728 A123237
Adjacent sequences: A001018 A001019 A001020 this_sequence A001022 A001023 A001024
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KEYWORD
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nonn,easy
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AUTHOR
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njas
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