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A058153
Number of labeled monoids of order n.
5
1, 4, 33, 624, 20610, 1252032, 129552080, 63141932606
OFFSET
1,2
CROSSREFS
a(n) = A058154(n)*n.
Sequence in context: A072754 A225609 A113086 * A020197 A102959 A057959
KEYWORD
nonn,more
AUTHOR
Christian G. Bower, Nov 14 2000
EXTENSIONS
a(8) from Christian G. Bower, Dec 28 2006
STATUS
approved