A001331 Number of n-element algebras with 1 ternary operation.

1, 130, 1270932917454, 14178431955039102644307345678938144832, 19591572513704791799478942287037427963644425946432640042160816616766795992851260047500, 1672390093955882094725125078968449171301017629802018367164057251590306327375884442617701277598562886114475651122751129803783336384871488080121922759032559677888042592

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• nice

References

• N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
• N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

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

Crossrefs

Cf. A091510.

Extensions

More terms from Pab Ter (pabrlos(AT)yahoo.com), May 06 2004