A079231 - OEIS

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A079231

Number of isomorphism classes of non-associative non-commutative non-anti-associative non-anti-commutative closed binary operations on a set of order n.

9

0, 0, 2187, 147067071

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OFFSET

1,3

COMMENTS

A079231(n)+A079233(n)+A079235(n)+A079237(n)+A079196(n)+A079241(n)+A079243(n)+A079245(n)+A063524(n)=A002489(n)

Each a(n) is equal to the sum of the elements in row n of A079202.

LINKS

Table of n, a(n) for n=1..4.

CROSSREFS

Cf. A079202, A079230, A079233, A079235, A079237, A079196, A079241, A079243, A079245, A063524.

Sequence in context: A017203 A017311 A017431 * A017563 A357674 A352035

Adjacent sequences: A079228 A079229 A079230 * A079232 A079233 A079234

KEYWORD

nonn

AUTHOR

Christian van den Bosch (cjb(AT)cjb.ie), Jan 03 2003

STATUS

approved