A108032 - cp's OEIS frontend

A108032 Triangle T(n,k), 0<=k<=n, read by rows, defined by : T(0,0) = 1, T(n,k) = 0 if n or if k<0, T(n,k) = kT(n-1, k-1) + (2n-2k-1)T(n-1, k).

n	a(n)
0	1
1	1
2	1
3	3
4	2
5	2
6	15
7	9
8	6
9	6
10	105
11	60
12	36
13	24
14	24
15	945
16	525
17	300
18	180
19	120
20	120
21	10395
22	5670
23	3150
24	1800
25	1080
26	720
27	720
28	135135
29	72765
30	39690
31	22050
32	12600
33	7560
34	5040
35	5040
36	2027025
37	1081080
38	582120
39	317520
40	176400
41	100800
42	60480
43	40320
44	40320

[1, 1, 1, 3, 2, 2, 15, 9, 6, 6, 105, 60, 36, 24, 24, 945, 525, 300, 180, 120, 120, 10395, 5670, 3150, 1800, 1080, 720, 720, 135135, 72765, 39690, 22050, 12600, 7560, 5040, 5040, 2027025, 1081080, 582120, 317520, 176400, 100800, 60480, 40320, 40320]

cp's OEIS Frontend

A108032 Triangle T(n,k), 0<=k<=n, read by rows, defined by : T(0,0) = 1, T(n,k) = 0 if n or if k<0, T(n,k) = kT(n-1, k-1) + (2n-2k-1)T(n-1, k).

Table of values

List of values

cp's OEIS Frontend

A108032 Triangle T(n,k), 0<=k<=n, read by rows, defined by : T(0,0) = 1, T(n,k) = 0 if n or if k<0, T(n,k) = k*T(n-1, k-1) + (2n-2k-1)*T(n-1, k).

Table of values

List of values

A108032 Triangle T(n,k), 0<=k<=n, read by rows, defined by : T(0,0) = 1, T(n,k) = 0 if n or if k<0, T(n,k) = kT(n-1, k-1) + (2n-2k-1)T(n-1, k).