A090285 - cp's OEIS frontend

A090285 Triangle T(n,k), 0<=k<=n, read by rows, defined by: T(n,k)=0 if k>n, T(n,0) = A000108(n); T(n+1,k)= Sum_{j=0..n} T(n-j,k-1)*binomial(2j+1,j+1).

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	1
6	5
7	15
8	7
9	1
10	14
11	56
12	37
13	10
14	1
15	42
16	210
17	176
18	68
19	13
20	1
21	132
22	792
23	794
24	392
25	108
26	16
27	1
28	429
29	3003
30	3473
31	2063
32	731
33	157
34	19
35	1
36	1430
37	11440
38	14893
39	10254
40	4395
41	1220
42	215
43	22
44	1
45	4862
46	43758
47	63004
48	49024
49	24465
50	8249
51	1886
52	282
53	25
54	1

[1, 1, 1, 2, 4, 1, 5, 15, 7, 1, 14, 56, 37, 10, 1, 42, 210, 176, 68, 13, 1, 132, 792, 794, 392, 108, 16, 1, 429, 3003, 3473, 2063, 731, 157, 19, 1, 1430, 11440, 14893, 10254, 4395, 1220, 215, 22, 1, 4862, 43758, 63004, 49024, 24465, 8249, 1886, 282, 25, 1]

cp's OEIS Frontend

A090285 Triangle T(n,k), 0<=k<=n, read by rows, defined by: T(n,k)=0 if k>n, T(n,0) = A000108(n); T(n+1,k)= Sum_{j=0..n} T(n-j,k-1)*binomial(2j+1,j+1).

Table of values

List of values