A142458 - cp's OEIS frontend

A142458 Triangle T(n,k) read by rows: T(n,k) = 1 if k=1 or k=n, otherwise T(n,k) = (3n-3k+1)T(n-1,k-1) + (3k-2)*T(n-1,k).

n	a(n)
1	1
2	1
3	1
4	1
5	8
6	1
7	1
8	39
9	39
10	1
11	1
12	166
13	546
14	166
15	1
16	1
17	677
18	5482
19	5482
20	677
21	1
22	1
23	2724
24	47175
25	109640
26	47175
27	2724
28	1
29	1
30	10915
31	373809
32	1709675
33	1709675
34	373809
35	10915
36	1
37	1
38	43682
39	2824048
40	23077694
41	44451550
42	23077694
43	2824048
44	43682
45	1

[1, 1, 1, 1, 8, 1, 1, 39, 39, 1, 1, 166, 546, 166, 1, 1, 677, 5482, 5482, 677, 1, 1, 2724, 47175, 109640, 47175, 2724, 1, 1, 10915, 373809, 1709675, 1709675, 373809, 10915, 1, 1, 43682, 2824048, 23077694, 44451550, 23077694, 2824048, 43682, 1]

cp's OEIS Frontend

A142458 Triangle T(n,k) read by rows: T(n,k) = 1 if k=1 or k=n, otherwise T(n,k) = (3n-3k+1)T(n-1,k-1) + (3k-2)*T(n-1,k).

Table of values

List of values

cp's OEIS Frontend

A142458 Triangle T(n,k) read by rows: T(n,k) = 1 if k=1 or k=n, otherwise T(n,k) = (3*n-3*k+1)*T(n-1,k-1) + (3*k-2)*T(n-1,k).

Table of values

List of values

A142458 Triangle T(n,k) read by rows: T(n,k) = 1 if k=1 or k=n, otherwise T(n,k) = (3n-3k+1)T(n-1,k-1) + (3k-2)*T(n-1,k).