A375447 - cp's OEIS frontend

A375447 Triangle read by rows: T(n, k) = n! * 3^k * hypergeom([-k], [-n], 1/3).

n	a(n)
0	1
1	1
2	4
3	2
4	7
5	25
6	6
7	20
8	67
9	226
10	24
11	78
12	254
13	829
14	2713
15	120
16	384
17	1230
18	3944
19	12661
20	40696
21	720
22	2280
23	7224
24	22902
25	72650
26	230611
27	732529
28	5040
29	15840
30	49800
31	156624
32	492774
33	1550972
34	4883527
35	15383110
36	40320
37	126000
38	393840
39	1231320
40	3850584
41	12044526
42	37684550
43	117937177
44	369194641

[1, 1, 4, 2, 7, 25, 6, 20, 67, 226, 24, 78, 254, 829, 2713, 120, 384, 1230, 3944, 12661, 40696, 720, 2280, 7224, 22902, 72650, 230611, 732529, 5040, 15840, 49800, 156624, 492774, 1550972, 4883527, 15383110, 40320, 126000, 393840, 1231320, 3850584, 12044526, 37684550, 117937177, 369194641]

cp's OEIS Frontend

A375447 Triangle read by rows: T(n, k) = n! * 3^k * hypergeom([-k], [-n], 1/3).

Table of values

List of values