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A091967 a(n) = n-th term of sequence A_n. +0
5
1, 2, 1, 0, 2, 3, 0, 6, 6, 4, 44, 1, 180, 42, 16, 1096, 7652, 13781, 8, 24000, 119779, 458561, 152116956851941670912, 1054535, -53, 26, 27, 59, 4806078, 2, 35792568, 3010349, 2387010102192469724605148123694256128, 2, 0, -53, 43, 0, -4097, 173, 37338, 111111111111111111111111111111111111111111 (list; graph; listen)
OFFSET

1,2

COMMENT

This version ignores the offset of A_n and just counts from the beginning of the terms shown in the OEIS entry.

Thus a(8) = 6 because A_8 begins 1,1,2,2,3,4,5,6,... [even though A_8(8) is really 7].

LINKS

M. F. Hasler, Table of n,a(n) for n=1..46 (including conjectured value of a(43) yet to be proved) - Jan 30 2009

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

EXAMPLE

a(26) = 26 because the 26-th term of A000026 = 26

CROSSREFS

See A051070, A107357, A102288 for other versions.

Cf. A000001, A000002, A000003, A000004, A000005, A000006, A000007, A000008, A000009, A000010, A000011, A000012, A000013, A000014, A000015, etc.

Sequence in context: A144219 A144027 A019591 this_sequence A031135 A037181 A051070

Adjacent sequences: A091964 A091965 A091966 this_sequence A091968 A091969 A091970

KEYWORD

sign

AUTHOR

Proposed by several people, including Jeff Burch (jmburch(AT)osprey.smcm.edu) and Michael Joseph Halm (hierogamous(AT)lycos.com)

EXTENSIONS

Corrected and extended by Jud McCranie (j.mccranie(AT)comcast.net). Further extended by N. J. A. Sloane (njas(AT)research.att.com) and E. M. Rains Dec 08 1998.

Corrected and extended by N. J. A. Sloane (njas(AT)research.att.com), May 25, 2005

a(43) is presently unknown, since A000043(43) is the exponent of the 43rd Mersenne prime. a(44) = 413927966. - N. J. A. Sloane (njas(AT)research.att.com), May 25 2005

Corrected a(26), a(36) and a(42). - M. F. Hasler, Jan 30 2009

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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