A058140 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A058140

Triangle read by rows: number of asymmetric monoids of order n with k idempotents.

2

1, 1, 1, 0, 3, 1, 0, 6, 10, 3, 0, 14, 47, 55, 12, 0, 124, 267, 490, 395, 68, 0, 4510, 2230, 4460, 5971, 3324, 502, 0

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,5

LINKS

Table of n, a(n) for n=1..29.

Index entries for sequences related to monoids

EXAMPLE

1;

1,1;

0,3,1;

0,6,10,3;

0,14,47,55,12;

...

CROSSREFS

Row sums give A058130. Main diagonal: A058115(n-1). Column 2: A058141.

Sequence in context: A137651 A248826 A058152 * A074678 A363976 A201586

Adjacent sequences: A058137 A058138 A058139 * A058141 A058142 A058143

KEYWORD

nonn,tabl,more

AUTHOR

Christian G. Bower, Nov 14 2000

STATUS

approved