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A252786 Number of exponent-5 class 2 groups of order 5^n. 3
0, 0, 1, 3, 7, 26, 117, 6851, 85249444, 39565495603665, 40261075301026166295207 (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. A090130, A252784, A252785, A252787.

Sequence in context: A069738 A057005 A158561 * A108217 A120120 A126472

Adjacent sequences:  A252783 A252784 A252785 * A252787 A252788 A252789

KEYWORD

nonn,hard,more

AUTHOR

Eric M. Schmidt, Dec 21 2014

STATUS

approved

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Last modified April 13 15:23 EDT 2021. Contains 342936 sequences. (Running on oeis4.)