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A051070
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a(n) is the n-th term in sequence A_n, respecting the offset.
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5
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1, 2, 1, 0, 2, 3, 0, 7, 8, 4, 63, 1, 316, 78, 16, 2048, 7652, 26627, 8, 24000, 232919, 1145406, 3498690007594650042368, 2058537, 58, 26, 27, 59, 9272780, 3, 69273668, 4870847, 2387010102192469724605148123694256128, 1, 1, 53, 43, 0, -4696, 173, 44583, 42
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OFFSET
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1,2
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LINKS
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Table of n, a(n) for n=1..42.
E. M. Rains and N. J. A. Sloane, On Cayley's Enumeration of Alkanes (or 4-Valent Trees)., J. Integer Sequences, Vol. 2 (1999), Article 99.1.1.
N. J. A. Sloane, My favorite integer sequences, in Sequences and their Applications (Proceedings of SETA '98).
N. J. A. Sloane, Online Encyclopedia of Integer Sequences
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CROSSREFS
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Cf. A000001 through A000044. See also A031214, A037181, A031135.
Sequence in context: A091967 A031135 A037181 * A104041 A104402 A131084
Adjacent sequences: A051067 A051068 A051069 * A051071 A051072 A051073
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KEYWORD
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easy,sign
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AUTHOR
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Robert G. Wilson v, Aug 23 2000
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EXTENSIONS
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Rechecked and 4 more terms added by N. J. A. Sloane, May 25 2005
a(43) is presently unknown, since A000043(43) is the exponent of the 43rd Mersenne prime. a(44) = 668803781. - N. J. A. Sloane, May 25 2005
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STATUS
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approved
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