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A058104 Number of asymmetric semigroups of order n. 2
1, 1, 3, 15, 112, 1221, 19684, 1458882 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..7.

Index entries for sequences related to semigroups

CROSSREFS

Cf. A027851, A058113. a(n) = A079175(n, A027423(n)).

Sequence in context: A267083 A089945 A135083 * A298390 A299508 A299308

Adjacent sequences:  A058101 A058102 A058103 * A058105 A058106 A058107

KEYWORD

nonn,hard

AUTHOR

Christian G. Bower, Nov 09 2000. Updated Feb 19 2001.

STATUS

approved

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Last modified February 25 03:06 EST 2018. Contains 299630 sequences. (Running on oeis4.)