3,1

B. Eick, Computing p-groups with trivial Schur multiplier, J. Algebra, 322 (2009), 741-751.

B. Eick and E. O'Brien, Enumerating p-groups, J. Australian Math. Soc., 67 (1999), 191-205.

Table of n, a(n) for n=3..9.

Cf. A170901, A170902.

Sequence in context: A164586 A018032 A086808 * A151347 A047093 A304256

Adjacent sequences: A170897 A170898 A170899 * A170901 A170902 A170903

nonn

N. J. A. Sloane, Jan 19 2010

approved