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URL: https://oeis.org/A030255

⇱ A030255 - OEIS

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A030255
Number of nonisomorphic commutative groupoids with no symmetry.
2
1, 1, 4, 116, 43428, 254197133
OFFSET
0,3
CROSSREFS
a(n) = A079185(n, A027423(n)). Cf. A001425.
Sequence in context: A198080 A272158 A194535 * A146508 A394271 A374676
KEYWORD
nonn,more
STATUS
approved