A058158 - cp's OEIS frontend

A058158 Triangle read by rows: T(n,k) is the number of labeled monoids of order n with k idempotents and a fixed identity.

n	a(n)
1	1
2	1
3	1
4	1
5	6
6	4
7	4
8	45
9	72
10	35
11	6
12	528
13	1308
14	1676
15	604
16	80
17	19935
18	39700
19	70170
20	62060
21	16727
22	120
23	3599436
24	1969470
25	3829000
26	5167800
27	3260382
28	681232
29	2760
30	6085914205
31	281840664
32	294812385
33	481221020
34	482447637
35	228315640
36	38187291

[1, 1, 1, 1, 6, 4, 4, 45, 72, 35, 6, 528, 1308, 1676, 604, 80, 19935, 39700, 70170, 62060, 16727, 120, 3599436, 1969470, 3829000, 5167800, 3260382, 681232, 2760, 6085914205, 281840664, 294812385, 481221020, 482447637, 228315640, 38187291]

cp's OEIS Frontend

A058158 Triangle read by rows: T(n,k) is the number of labeled monoids of order n with k idempotents and a fixed identity.

Table of values

List of values