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A083280 Number of 2-generator non-Abelian groups of order n. 1
0, 0, 0, 0, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 6, 0, 2, 0, 3, 1, 1, 0, 11, 0, 1, 2, 2, 0, 3, 0, 17, 0, 1, 0, 8, 0, 1, 1, 10, 0, 5, 0, 2, 0, 1, 0, 32, 0, 2, 0, 3, 0, 8, 1, 9, 1, 1, 0, 11, 0, 1, 2, 50, 0, 3, 0, 3, 0, 3, 0, 33, 0, 1, 1, 2, 0, 5, 0, 32, 7, 1, 0, 13 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,8

LINKS

Eric M. Schmidt, Table of n, a(n) for n = 1..1023

FORMULA

a(n) = A066389(n) - A046951(n).

CROSSREFS

Cf. A066389, A046951.

Sequence in context: A191255 A007814 A225345 * A060689 A053119 A162515

Adjacent sequences:  A083277 A083278 A083279 * A083281 A083282 A083283

KEYWORD

nonn

AUTHOR

Yuval Dekel (dekelyuval(AT)hotmail.com), Jun 02 2003

EXTENSIONS

More terms from Eric M. Schmidt, May 05 2013

STATUS

approved

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Last modified September 17 03:31 EDT 2014. Contains 246832 sequences.