A126970 - cp's OEIS frontend

A126970 Triangle T(n,k), 0 <= k <= n, read by rows given by: T(0,0)=1, T(n,k)=0 if k < 0 or if k > n, T(n,0) = T(n-1,1), T(n,k) = T(n-1,k-1) + 3*T(n-1,k) + T(n-1,k+1) for k >= 1.

n	a(n)
0	1
1	0
2	1
3	1
4	3
5	1
6	3
7	11
8	6
9	1
10	11
11	42
12	30
13	9
14	1
15	42
16	167
17	141
18	58
19	12
20	1
21	167
22	684
23	648
24	327
25	95
26	15
27	1
28	684
29	2867
30	2955
31	1724
32	627
33	141
34	18
35	1
36	2867
37	12240
38	13456
39	8754
40	3746
41	1068
42	196
43	21
44	1
45	12240
46	53043
47	61362
48	43464
49	21060
50	7146
51	1677
52	260
53	24
54	1

[1, 0, 1, 1, 3, 1, 3, 11, 6, 1, 11, 42, 30, 9, 1, 42, 167, 141, 58, 12, 1, 167, 684, 648, 327, 95, 15, 1, 684, 2867, 2955, 1724, 627, 141, 18, 1, 2867, 12240, 13456, 8754, 3746, 1068, 196, 21, 1, 12240, 53043, 61362, 43464, 21060, 7146, 1677, 260, 24, 1]

cp's OEIS Frontend

A126970 Triangle T(n,k), 0 <= k <= n, read by rows given by: T(0,0)=1, T(n,k)=0 if k < 0 or if k > n, T(n,0) = T(n-1,1), T(n,k) = T(n-1,k-1) + 3*T(n-1,k) + T(n-1,k+1) for k >= 1.

Table of values

List of values