A203412 - cp's OEIS frontend

A203412 Triangle read by rows, a(n,k), n>=k>=1, which represent the s=3, h=1 case of a two-parameter generalization of Stirling numbers arising in conjunction with normal ordering.

n	a(n)
1	1
2	1
3	1
4	4
5	3
6	1
7	28
8	19
9	6
10	1
11	280
12	180
13	55
14	10
15	1
16	3640
17	2260
18	675
19	125
20	15
21	1
22	58240
23	35280
24	10360
25	1925
26	245
27	21
28	1
29	1106560
30	658000
31	190680
32	35385
33	4620
34	434
35	28
36	1
37	24344320
38	14266560
39	4090240
40	756840
41	100065
42	9828
43	714
44	36
45	1

[1, 1, 1, 4, 3, 1, 28, 19, 6, 1, 280, 180, 55, 10, 1, 3640, 2260, 675, 125, 15, 1, 58240, 35280, 10360, 1925, 245, 21, 1, 1106560, 658000, 190680, 35385, 4620, 434, 28, 1, 24344320, 14266560, 4090240, 756840, 100065, 9828, 714, 36, 1]

cp's OEIS Frontend

A203412 Triangle read by rows, a(n,k), n>=k>=1, which represent the s=3, h=1 case of a two-parameter generalization of Stirling numbers arising in conjunction with normal ordering.

Table of values

List of values