A178820 - cp's OEIS frontend

A178820 Triangle read by rows: T(n,k) = C(n+3,3) * C(n,k), 0 <= k <= n.

n	a(n)
0	1
1	4
2	4
3	10
4	20
5	10
6	20
7	60
8	60
9	20
10	35
11	140
12	210
13	140
14	35
15	56
16	280
17	560
18	560
19	280
20	56
21	84
22	504
23	1260
24	1680
25	1260
26	504
27	84
28	120
29	840
30	2520
31	4200
32	4200
33	2520
34	840
35	120
36	165
37	1320
38	4620
39	9240
40	11550
41	9240
42	4620
43	1320
44	165
45	220
46	1980
47	7920
48	18480
49	27720
50	27720
51	18480
52	7920
53	1980
54	220

[1, 4, 4, 10, 20, 10, 20, 60, 60, 20, 35, 140, 210, 140, 35, 56, 280, 560, 560, 280, 56, 84, 504, 1260, 1680, 1260, 504, 84, 120, 840, 2520, 4200, 4200, 2520, 840, 120, 165, 1320, 4620, 9240, 11550, 9240, 4620, 1320, 165, 220, 1980, 7920, 18480, 27720, 27720, 18480, 7920, 1980, 220]

cp's OEIS Frontend

A178820 Triangle read by rows: T(n,k) = C(n+3,3) * C(n,k), 0 <= k <= n.

Table of values

List of values