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A252787
Number of exponent-7 class 2 groups of order 7^n.
3
0, 0, 1, 3, 7, 28, 131, 26465, 2832610615, 18602165186505644, 1577146952504975321253720851
OFFSET
0,4
LINKS
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.
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Eric M. Schmidt, Dec 21 2014
STATUS
approved