2,1

W. E. Clark and J. Pedersen, Catalogue of Algebraic Systems

C. Noebauer, Home page

C. Noebauer, The Numbers of Small Rings

C. Noebauer, Thesis on the enumeration of near-rings

Cf. A027623, A037291.

Sequence in context: A101315 A066541 A087122 this_sequence A080560 A151866 A057587

Adjacent sequences: A037218 A037219 A037220 this_sequence A037222 A037223 A037224

nonn,nice

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

Corrected by Christof Noebauer (christof.noebauer(AT)algebra.uni-linz.ac.at), Sep 29 2000