VOOZH about

URL: https://oeis.org/A118477

⇱ A118477 - OEIS

login
A118477
Number of nonassociative rings with <= n elements.
0
1, 3, 5, 60, 62, 66, 68, 801356, 801521, 801525, 801527, 801637, 801639, 801643, 801647
OFFSET
1,2
COMMENTS
Partial sums of A037292 Number of nonassociative rings with n elements.
REFERENCES
"Reviews in Ring Theory, 1980-1984", American Mathematical Society, 1986; ISBN 0-8218-0097-3.
FORMULA
a(n) = Sum_{i=1..n} A037292(i).
EXAMPLE
a(15) = 1 + 2 + 2 + 55 + 2 + 4 + 2 + 801288 + 165 + 4 + 2 + 110 + 2 + 4 + 4 = 801647.
CROSSREFS
Sequence in context: A158314 A249011 A261533 * A380422 A320082 A273254
KEYWORD
nonn,more
AUTHOR
Jonathan Vos Post, May 05 2006
EXTENSIONS
Data corrected by Giovanni Resta, Jun 16 2016
STATUS
approved