A138779 - cp's OEIS frontend

A138779 Triangle read by rows: T(n,k)=k*binomial(n-2k,3k+1) (n>=6, 0<=k<=(n-1)/5).

n	a(n)
6	1
7	5
8	15
9	35
10	70
11	126
12	2
13	210
14	16
15	330
16	72
17	495
18	240
19	715
20	660
21	1001
22	1584
23	3
24	1365
25	3432
26	33
27	1820
28	6864
29	198
30	2380
31	12870
32	858
33	3060
34	22880
35	3003
36	3876
37	38896
38	9009
39	4
40	4845
41	63648
42	24024
43	56
44	5985
45	100776
46	58344
47	420

[1, 5, 15, 35, 70, 126, 2, 210, 16, 330, 72, 495, 240, 715, 660, 1001, 1584, 3, 1365, 3432, 33, 1820, 6864, 198, 2380, 12870, 858, 3060, 22880, 3003, 3876, 38896, 9009, 4, 4845, 63648, 24024, 56, 5985, 100776, 58344, 420]

cp's OEIS Frontend

A138779 Triangle read by rows: T(n,k)=k*binomial(n-2k,3k+1) (n>=6, 0<=k<=(n-1)/5).

Table of values

List of values