A254881 - cp's OEIS frontend

A254881 Triangle read by rows, T(n,k) = sum(j=0..k-1, S(n+1,j+1)*S(n,k-j)) where S denotes the Stirling cycle numbers A132393, T(0,0)=1, n>=0, 0<=k<=2n.

n	a(n)
0	1
1	0
2	1
3	1
4	0
5	2
6	5
7	4
8	1
9	0
10	12
11	40
12	51
13	31
14	9
15	1
16	0
17	144
18	564
19	904
20	769
21	376
22	106
23	16
24	1
25	0
26	2880
27	12576
28	23300
29	24080
30	15345
31	6273
32	1650
33	270
34	25
35	1
36	0
37	86400
38	408960
39	840216
40	991276
41	748530
42	381065
43	133848
44	32523
45	5370
46	575
47	36
48	1
49	0
50	3628800
51	18299520

[1, 0, 1, 1, 0, 2, 5, 4, 1, 0, 12, 40, 51, 31, 9, 1, 0, 144, 564, 904, 769, 376, 106, 16, 1, 0, 2880, 12576, 23300, 24080, 15345, 6273, 1650, 270, 25, 1, 0, 86400, 408960, 840216, 991276, 748530, 381065, 133848, 32523, 5370, 575, 36, 1, 0, 3628800, 18299520]

cp's OEIS Frontend

A254881 Triangle read by rows, T(n,k) = sum(j=0..k-1, S(n+1,j+1)*S(n,k-j)) where S denotes the Stirling cycle numbers A132393, T(0,0)=1, n>=0, 0<=k<=2n.

Table of values

List of values