A141323 Number of groups of order L(n).

1, 1, 1, 2, 1, 1, 5, 1, 1, 4, 1, 1, 4, 2, 1, 9, 1, 1, 30, 1, 1, 11, 5, 1, 4, 1, 2, 9, 2, 1

Offset

0,4

Comments

This is to A140987 as Lucas numbers A000032 are to Fibonacci numbers A000045.

Links

Table of n, a(n) for n=0..29.

GAP package GrpConst

Formula

a(n) = A000001(A000032(n)).

Example

a(6) = 5 because the Lucas number L(6) (starting at L(0) = 2) is 18 and there are 5 groups of order 18.

Crossrefs

Cf. A000001, A000032, A000045, A140987.

Sequence in context: A088347 A069568 A210545 * A210876 A174785 A356399

Adjacent sequences: A141320 A141321 A141322 * A141324 A141325 A141326

Keyword

more,nonn

Author

Jonathan Vos Post, Aug 02 2008

Extensions

a(16)-a(29) from Eric M. Schmidt, Jun 20 2014

Status

approved