1,2

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

M. A. Harrison, The number of isomorphism types of finite algebras, Proc. Amer. Math. Soc., 17 (1966), 731-737.

Cf. A091510.

Sequence in context: A167702 A064687 A084641 this_sequence A071234 A145096 A050671

Adjacent sequences: A001328 A001329 A001330 this_sequence A001332 A001333 A001334

nonn,nice

N. J. A. Sloane (njas(AT)research.att.com).

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