A168621 - cp's OEIS frontend

A168621 Triangle read by rows: T(n,0) = T(n,n) = 1 for n >= 0, T(n,k) = ((n - 1)! + 1)*binomial(n, k) for 1 <= k <= n - 1, n >= 2.

n	a(n)
0	1
1	1
2	1
3	1
4	4
5	1
6	1
7	9
8	9
9	1
10	1
11	28
12	42
13	28
14	1
15	1
16	125
17	250
18	250
19	125
20	1
21	1
22	726
23	1815
24	2420
25	1815
26	726
27	1
28	1
29	5047
30	15141
31	25235
32	25235
33	15141
34	5047
35	1
36	1
37	40328
38	141148
39	282296
40	352870
41	282296
42	141148
43	40328
44	1
45	1
46	362889
47	1451556
48	3386964
49	5080446
50	5080446
51	3386964
52	1451556
53	362889
54	1

[1, 1, 1, 1, 4, 1, 1, 9, 9, 1, 1, 28, 42, 28, 1, 1, 125, 250, 250, 125, 1, 1, 726, 1815, 2420, 1815, 726, 1, 1, 5047, 15141, 25235, 25235, 15141, 5047, 1, 1, 40328, 141148, 282296, 352870, 282296, 141148, 40328, 1, 1, 362889, 1451556, 3386964, 5080446, 5080446, 3386964, 1451556, 362889, 1]

cp's OEIS Frontend

A168621 Triangle read by rows: T(n,0) = T(n,n) = 1 for n >= 0, T(n,k) = ((n - 1)! + 1)*binomial(n, k) for 1 <= k <= n - 1, n >= 2.

Table of values

List of values