A118931 - cp's OEIS frontend

A118931 Triangle, read by rows, where T(n,k) = n!/(k!(n-3k)!3^k) for n>=3k>=0.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	8
7	1
8	20
9	1
10	40
11	40
12	1
13	70
14	280
15	1
16	112
17	1120
18	1
19	168
20	3360
21	2240
22	1
23	240
24	8400
25	22400
26	1
27	330
28	18480
29	123200
30	1
31	440
32	36960
33	492800
34	246400
35	1
36	572
37	68640
38	1601600
39	3203200
40	1
41	728
42	120120
43	4484480
44	22422400
45	1
46	910
47	200200
48	11211200
49	112112000
50	44844800

[1, 1, 1, 1, 2, 1, 8, 1, 20, 1, 40, 40, 1, 70, 280, 1, 112, 1120, 1, 168, 3360, 2240, 1, 240, 8400, 22400, 1, 330, 18480, 123200, 1, 440, 36960, 492800, 246400, 1, 572, 68640, 1601600, 3203200, 1, 728, 120120, 4484480, 22422400, 1, 910, 200200, 11211200, 112112000, 44844800]

cp's OEIS Frontend

A118931 Triangle, read by rows, where T(n,k) = n!/(k!(n-3k)!3^k) for n>=3k>=0.

Table of values

List of values

cp's OEIS Frontend

A118931 Triangle, read by rows, where T(n,k) = n!/(k!*(n-3*k)!*3^k) for n>=3*k>=0.

Table of values

List of values

A118931 Triangle, read by rows, where T(n,k) = n!/(k!(n-3k)!3^k) for n>=3k>=0.