A144440 - cp's OEIS frontend

A144440 Triangle T(n,k) by rows: T(n, k) = (3n-3k+1)T(n-1, k-1) +(3k-2)T(n-1, k) + 3T(n-2, k-1) with T(n, 1) = T(n, n) = 1.

n	a(n)
1	1
2	1
3	1
4	1
5	11
6	1
7	1
8	54
9	54
10	1
11	1
12	229
13	789
14	229
15	1
16	1
17	932
18	7975
19	7975
20	932
21	1
22	1
23	3747
24	68628
25	161867
26	68628
27	3747
28	1
29	1
30	15010
31	543144
32	2534759
33	2534759
34	543144
35	15010
36	1
37	1
38	60065
39	4098439
40	34243778
41	66389335
42	34243778
43	4098439
44	60065
45	1

[1, 1, 1, 1, 11, 1, 1, 54, 54, 1, 1, 229, 789, 229, 1, 1, 932, 7975, 7975, 932, 1, 1, 3747, 68628, 161867, 68628, 3747, 1, 1, 15010, 543144, 2534759, 2534759, 543144, 15010, 1, 1, 60065, 4098439, 34243778, 66389335, 34243778, 4098439, 60065, 1]

cp's OEIS Frontend

A144440 Triangle T(n,k) by rows: T(n, k) = (3n-3k+1)T(n-1, k-1) +(3k-2)T(n-1, k) + 3T(n-2, k-1) with T(n, 1) = T(n, n) = 1.

Table of values

List of values

cp's OEIS Frontend

A144440 Triangle T(n,k) by rows: T(n, k) = (3*n-3*k+1)*T(n-1, k-1) +(3*k-2)*T(n-1, k) + 3*T(n-2, k-1) with T(n, 1) = T(n, n) = 1.

Table of values

List of values

A144440 Triangle T(n,k) by rows: T(n, k) = (3n-3k+1)T(n-1, k-1) +(3k-2)T(n-1, k) + 3T(n-2, k-1) with T(n, 1) = T(n, n) = 1.