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A252785 Number of exponent-3 class 2 groups of order 3^n. 3
0, 0, 1, 3, 7, 24, 103, 1565, 602419, 4896600938, 5876589263966179 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..10.

J. H. Conway, Heiko Dietrich and E. A. O'Brien, Counting groups: gnus, moas and other exotica.

Bettina Eick and E. A. O'Brien, Enumerating p-groups. Group theory. J. Austral. Math. Soc. Ser. A 67 (1999), no. 2, 191-205.

E. A. O'Brien, Bibliography on the determination of finite groups.

CROSSREFS

Cf. A090091, A252784, A252786, A252787.

Sequence in context: A007172 A027610 A135688 * A229039 A005642 A019055

Adjacent sequences:  A252782 A252783 A252784 * A252786 A252787 A252788

KEYWORD

nonn,hard,more

AUTHOR

Eric M. Schmidt, Dec 21 2014

STATUS

approved

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Last modified February 19 01:00 EST 2020. Contains 332028 sequences. (Running on oeis4.)