A252786 Number of exponent-5 class 2 groups of order 5^n.

0, 0, 1, 3, 7, 26, 117, 6851, 85249444, 39565495603665, 40261075301026166295207

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