A370208 - cp's OEIS frontend

A370208 Triangular array read by rows. T(n,k) is the number of idempotent binary relations on [n] having no proper power primitive (A360718) with exactly k irreflexive points.

n	a(n)
0	1
1	1
2	1
3	3
4	6
5	13
6	39
7	87
8	348
9	24
10	841
11	4205
12	480
13	11643
14	69858
15	9420
16	240
17	227893
18	1595251
19	206640
20	9240
21	6285807
22	50286456
23	5389552
24	299040
25	3360
26	243593041
27	2192337369
28	172041408
29	9848160
30	211680

[1, 1, 1, 3, 6, 13, 39, 87, 348, 24, 841, 4205, 480, 11643, 69858, 9420, 240, 227893, 1595251, 206640, 9240, 6285807, 50286456, 5389552, 299040, 3360, 243593041, 2192337369, 172041408, 9848160, 211680]

cp's OEIS Frontend

A370208 Triangular array read by rows. T(n,k) is the number of idempotent binary relations on [n] having no proper power primitive (A360718) with exactly k irreflexive points.

Table of values

List of values