A166972 - cp's OEIS frontend

A166972 Triangle T(n,k) read by rows: T(n,k) = (n-k+1)T(n-1,k-1) + (3k-2)kT(n-1,k), initialized by T(n,1) = T(n,n) = 1.

n	a(n)
1	1
2	1
3	1
4	1
5	10
6	1
7	1
8	83
9	41
10	1
11	1
12	668
13	1110
14	122
15	1
16	1
17	5349
18	25982
19	8210
20	309
21	1
22	1
23	42798
24	572367
25	432328
26	44715
27	714
28	1
29	1
30	342391
31	12276495
32	20154955
33	4635787
34	202689
35	1561
36	1
37	1
38	2739136
39	260203132
40	879857170
41	402100930
42	38001292
43	815680

[1, 1, 1, 1, 10, 1, 1, 83, 41, 1, 1, 668, 1110, 122, 1, 1, 5349, 25982, 8210, 309, 1, 1, 42798, 572367, 432328, 44715, 714, 1, 1, 342391, 12276495, 20154955, 4635787, 202689, 1561, 1, 1, 2739136, 260203132, 879857170, 402100930, 38001292, 815680]

cp's OEIS Frontend

A166972 Triangle T(n,k) read by rows: T(n,k) = (n-k+1)T(n-1,k-1) + (3k-2)kT(n-1,k), initialized by T(n,1) = T(n,n) = 1.

Table of values

List of values

cp's OEIS Frontend

A166972 Triangle T(n,k) read by rows: T(n,k) = (n-k+1)*T(n-1,k-1) + (3*k-2)*k*T(n-1,k), initialized by T(n,1) = T(n,n) = 1.

Table of values

List of values

A166972 Triangle T(n,k) read by rows: T(n,k) = (n-k+1)T(n-1,k-1) + (3k-2)kT(n-1,k), initialized by T(n,1) = T(n,n) = 1.