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A037292
Number of nonassociative rings with n elements.
1
1, 2, 2, 55, 2, 4, 2, 801288, 165, 4, 2, 110, 2, 4, 4
OFFSET
1,2
COMMENTS
The standard definition of a ring requires that multiplication be associative, so these are very nonstandard rings.
The rings need not contain a multiplicative unit.
In fact more is known: 1,2,2,55,2,4,2,801288,165,4,2,110,2,4,4,?,2,330,2,110,4,4,2,1602576.
This sequence may be multiplicative. - Mitch Harris, Apr 19 2005
CROSSREFS
Cf. A027623.
Sequence in context: A321693 A268536 A323872 * A239151 A368867 A286377
KEYWORD
nonn,more
AUTHOR
Christian G. Bower, Jun 15 1998
STATUS
approved