A350276 - cp's OEIS frontend

A350276 Irregular triangle read by rows: T(n,k) is the number of endofunctions on [n] whose fourth-smallest component has size exactly k; n >= 0, 0 <= k <= max(0,n-3).

n	a(n)
0	1
1	1
2	4
3	27
4	255
5	1
6	3094
7	1
8	30
9	45865
10	46
11	405
12	340
13	803424
14	659
15	3780
16	10710
17	4970
18	16239720
19	12867
20	48405
21	209440
22	178920
23	87864
24	372076163
25	284785
26	1225665
27	3005940
28	5457060
29	3558492
30	1812384
31	9529560676
32	7126384
33	32262300
34	51205700
35	135084600
36	120593340
37	81557280
38	42609720

[1, 1, 4, 27, 255, 1, 3094, 1, 30, 45865, 46, 405, 340, 803424, 659, 3780, 10710, 4970, 16239720, 12867, 48405, 209440, 178920, 87864, 372076163, 284785, 1225665, 3005940, 5457060, 3558492, 1812384, 9529560676, 7126384, 32262300, 51205700, 135084600, 120593340, 81557280, 42609720]

cp's OEIS Frontend

A350276 Irregular triangle read by rows: T(n,k) is the number of endofunctions on [n] whose fourth-smallest component has size exactly k; n >= 0, 0 <= k <= max(0,n-3).

Table of values

List of values