A350079 - cp's OEIS frontend

A350079 Triangle read by rows: T(n,k) is the number of endofunctions on [n] whose second-smallest component has size exactly k; n >= 0, 0 <= k <= max(0,n-1).

n	a(n)
0	1
1	1
2	3
3	1
4	17
5	1
6	9
7	142
8	19
9	27
10	68
11	1569
12	201
13	135
14	510
15	710
16	21576
17	2921
18	3465
19	2890
20	6390
21	9414
22	355081
23	50233
24	63630
25	20230
26	84490
27	98847
28	151032
29	6805296
30	1004599
31	1196181
32	918680
33	705740
34	1493688
35	1812384
36	2840648
37	148869153
38	22872097
39	26904339
40	23943752
41	6351660
42	28072548
43	30810528
44	38348748
45	61247664

[1, 1, 3, 1, 17, 1, 9, 142, 19, 27, 68, 1569, 201, 135, 510, 710, 21576, 2921, 3465, 2890, 6390, 9414, 355081, 50233, 63630, 20230, 84490, 98847, 151032, 6805296, 1004599, 1196181, 918680, 705740, 1493688, 1812384, 2840648, 148869153, 22872097, 26904339, 23943752, 6351660, 28072548, 30810528, 38348748, 61247664]

cp's OEIS Frontend

A350079 Triangle read by rows: T(n,k) is the number of endofunctions on [n] whose second-smallest component has size exactly k; n >= 0, 0 <= k <= max(0,n-1).

Table of values

List of values