A058108 - cp's OEIS frontend

A058108 Triangle read by rows: number of nonisomorphic semigroups of order n with k idempotents.

n	a(n)
1	1
2	2
3	3
4	5
5	9
6	10
7	20
8	50
9	72
10	46
11	171
12	309
13	590
14	594
15	251
16	5284
17	2806
18	5422
19	7772
20	5668
21	1682
22	1224331
23	58583
24	61323
25	101539
26	109107
27	59576
28	13213
29	3667785000
30	9207430
31	1150085
32	1466691
33	1983558
34	1626956
35	690871
36	119826
37	105952488687468
38	25412267163
39	136799017
40	27690828
41	36991211
42	39865274
43	25666762
44	8739857
45	1228712

[1, 2, 3, 5, 9, 10, 20, 50, 72, 46, 171, 309, 590, 594, 251, 5284, 2806, 5422, 7772, 5668, 1682, 1224331, 58583, 61323, 101539, 109107, 59576, 13213, 3667785000, 9207430, 1150085, 1466691, 1983558, 1626956, 690871, 119826, 105952488687468, 25412267163, 136799017, 27690828, 36991211, 39865274, 25666762, 8739857, 1228712]

cp's OEIS Frontend

A058108 Triangle read by rows: number of nonisomorphic semigroups of order n with k idempotents.

Table of values

List of values