A154233 - cp's OEIS frontend

A154233 Triangle T(n, k) = T(n-1, k) + T(n-1, k-1) + (n^2 +n -1)*T(n-2, k-1), read by rows.

n	a(n)
0	1
1	1
2	1
3	1
4	7
5	1
6	1
7	19
8	19
9	1
10	1
11	39
12	171
13	39
14	1
15	1
16	69
17	761
18	761
19	69
20	1
21	1
22	111
23	2429
24	8533
25	2429
26	111
27	1
28	1
29	167
30	6335
31	52817
32	52817
33	6335
34	167
35	1
36	1
37	239
38	14383
39	231611
40	711477
41	231611
42	14383
43	239
44	1
45	1
46	329
47	29485
48	809809
49	5643801
50	5643801
51	809809
52	29485
53	329
54	1

[1, 1, 1, 1, 7, 1, 1, 19, 19, 1, 1, 39, 171, 39, 1, 1, 69, 761, 761, 69, 1, 1, 111, 2429, 8533, 2429, 111, 1, 1, 167, 6335, 52817, 52817, 6335, 167, 1, 1, 239, 14383, 231611, 711477, 231611, 14383, 239, 1, 1, 329, 29485, 809809, 5643801, 5643801, 809809, 29485, 329, 1]

cp's OEIS Frontend

A154233 Triangle T(n, k) = T(n-1, k) + T(n-1, k-1) + (n^2 +n -1)*T(n-2, k-1), read by rows.

Table of values

List of values