A190915 Number of association types of a binary-ternary algebra with a commutative binary operation.

1, 1, 2, 6, 17, 57, 191, 678, 2443, 9029

Offset

1,3

References

Bremner, Murray R.; and Hentzel, Irvin R.; Identities relating the Jordan product and the associator in the free nonassociative algebra. J. Algebra Appl. 5 (2006), 77-88.

Links

Table of n, a(n) for n=1..10.

Formula

The reference gives a recurrence.

Crossrefs

Cf. A190916.

Sequence in context: A150033 A150034 A238127 * A032132 A339223 A148454

Adjacent sequences: A190912 A190913 A190914 * A190916 A190917 A190918

Keyword

nonn

Author

N. J. A. Sloane, May 23 2011

Status

approved