A007799 - cp's OEIS frontend

A007799 Irregular triangle read by rows: Whitney numbers of the second kind a(n,k), n >= 1, k >= 0, for the star poset.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	2
7	1
8	1
9	3
10	6
11	9
12	5
13	1
14	4
15	12
16	30
17	44
18	26
19	3
20	1
21	5
22	20
23	70
24	170
25	250
26	169
27	35
28	1
29	6
30	30
31	135
32	460
33	1110
34	1689
35	1254
36	340
37	15
38	1
39	7
40	42
41	231
42	1015
43	3430
44	8379
45	13083
46	10408
47	3409
48	315
49	1
50	8
51	56
52	364
53	1960
54	8540
55	28994
56	71512
57	114064
58	96116
59	36260

[1, 1, 1, 1, 2, 2, 1, 1, 3, 6, 9, 5, 1, 4, 12, 30, 44, 26, 3, 1, 5, 20, 70, 170, 250, 169, 35, 1, 6, 30, 135, 460, 1110, 1689, 1254, 340, 15, 1, 7, 42, 231, 1015, 3430, 8379, 13083, 10408, 3409, 315, 1, 8, 56, 364, 1960, 8540, 28994, 71512, 114064, 96116, 36260]

cp's OEIS Frontend

A007799 Irregular triangle read by rows: Whitney numbers of the second kind a(n,k), n >= 1, k >= 0, for the star poset.

Table of values

List of values