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A140987 Number of groups of order F(n). 3
1, 1, 1, 1, 1, 5, 1, 2, 2, 2, 1, 197, 1, 1, 6, 2, 1, 41, 1, 7, 4, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Table of n, a(n) for n=1..23.

GAP package GrpConst

FORMULA

a(n) = A000001(A000045(n)).

EXAMPLE

a(6) = 5 because Fibonacci number F(6) = 8 and there are 5 groups of order 8.

CROSSREFS

Cf. A000001, A000040, A000045, A001358, A001605, A072381.

Sequence in context: A260821 A068115 A068139 * A097562 A275889 A046771

Adjacent sequences:  A140984 A140985 A140986 * A140988 A140989 A140990

KEYWORD

nonn,more

AUTHOR

Jonathan Vos Post, Jul 28 2008

EXTENSIONS

Entries through a(17) checked by N. J. A. Sloane, Aug 01 2008

a(18)-a(23) from Eric M. Schmidt, Jun 19 2014

STATUS

approved

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Last modified June 6 14:04 EDT 2020. Contains 334827 sequences. (Running on oeis4.)