A138777 - cp's OEIS frontend

A138777 Triangle read by rows: T(n,k)=binomial(n-2k,3k+2) (n>=2, 0<=k<=(n-2)/5).

n	a(n)
2	1
3	3
4	6
5	10
6	15
7	21
8	1
9	28
10	6
11	36
12	21
13	45
14	56
15	55
16	126
17	66
18	252
19	1
20	78
21	462
22	9
23	91
24	792
25	45
26	105
27	1287
28	165
29	120
30	2002
31	495
32	136
33	3003
34	1287
35	1
36	153
37	4368
38	3003
39	12
40	171
41	6188
42	6435
43	78
44	190
45	8568
46	12870
47	364

[1, 3, 6, 10, 15, 21, 1, 28, 6, 36, 21, 45, 56, 55, 126, 66, 252, 1, 78, 462, 9, 91, 792, 45, 105, 1287, 165, 120, 2002, 495, 136, 3003, 1287, 1, 153, 4368, 3003, 12, 171, 6188, 6435, 78, 190, 8568, 12870, 364]

cp's OEIS Frontend

A138777 Triangle read by rows: T(n,k)=binomial(n-2k,3k+2) (n>=2, 0<=k<=(n-2)/5).

Table of values

List of values