3,2
Liedahl, Steven; Enumeration of metacyclic $p$-groups. J. Algebra 186 (1996), no. 2, 436-446.
Sequence in context: A027384 A022939 A036702 * A049640 A179385 A024668
Adjacent sequences: A007980 A007981 A007982 * A007984 A007985 A007986
nonn
S. Liedahl