A088806 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A088806

Number of non-Abelian nilpotent groups of order n.

1

0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 0, 0, 44, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0, 0, 0, 0, 0, 0, 256, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 9, 10, 0, 0, 0, 0, 0

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,8

COMMENTS

a(n) = 0 precisely when n is cubefree. - Eric M. Schmidt, Dec 19 2014

LINKS

T. D. Noe, Table of n, a(n) for n = 1..2015

FORMULA

a(n) = A066060(n) - A000688(n).

CROSSREFS

Cf. A066060, A000688.

Sequence in context: A002483 A282530 A060478 * A359602 A280618 A347714

Adjacent sequences: A088803 A088804 A088805 * A088807 A088808 A088809

KEYWORD

nonn

AUTHOR

Yuval Dekel (dekelyuval(AT)hotmail.com), Nov 22 2003

STATUS

approved