A230698 - cp's OEIS frontend

A230698 Triangle read by rows: T(n,k) = T(n-1,k-1) + n*T(n-2,k); T(0,0) = T(1,0) = T(1,1) = 1, T(n,k) = 0 if k>n or if k<0.

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	1
6	3
7	5
8	1
9	1
10	8
11	7
12	9
13	1
14	1
15	15
16	33
17	12
18	14
19	1
20	1
21	48
22	57
23	87
24	18
25	20
26	1
27	1
28	105
29	279
30	141
31	185
32	25
33	27
34	1
35	1
36	384
37	561
38	975
39	285
40	345
41	33
42	35
43	1
44	1
45	945
46	2895
47	1830
48	2640
49	510
50	588
51	42
52	44
53	1
54	1
55	3840
56	6555
57	12645
58	4680
59	6090
60	840
61	938
62	52
63	54
64	1
65	1

[1, 1, 1, 2, 1, 1, 3, 5, 1, 1, 8, 7, 9, 1, 1, 15, 33, 12, 14, 1, 1, 48, 57, 87, 18, 20, 1, 1, 105, 279, 141, 185, 25, 27, 1, 1, 384, 561, 975, 285, 345, 33, 35, 1, 1, 945, 2895, 1830, 2640, 510, 588, 42, 44, 1, 1, 3840, 6555, 12645, 4680, 6090, 840, 938, 52, 54, 1, 1]

cp's OEIS Frontend

A230698 Triangle read by rows: T(n,k) = T(n-1,k-1) + n*T(n-2,k); T(0,0) = T(1,0) = T(1,1) = 1, T(n,k) = 0 if k>n or if k<0.

Table of values

List of values