A317496 - cp's OEIS frontend

A317496 Triangle T(n,k) = T(n-1,k) + 3*T(n-3,k-1) for k = 0..floor(n/3) with T(0,0) = 1, T(n,k) = 0 for n or k < 0, read by rows.

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	1
6	6
7	1
8	9
9	1
10	12
11	9
12	1
13	15
14	27
15	1
16	18
17	54
18	1
19	21
20	90
21	27
22	1
23	24
24	135
25	108
26	1
27	27
28	189
29	270
30	1
31	30
32	252
33	540
34	81
35	1
36	33
37	324
38	945
39	405
40	1
41	36
42	405
43	1512
44	1215
45	1
46	39
47	495
48	2268
49	2835
50	243
51	1
52	42
53	594
54	3240
55	5670
56	1458
57	1
58	45
59	702
60	4455
61	10206
62	5103
63	1
64	48
65	819
66	5940
67	17010
68	13608
69	729

[1, 1, 1, 1, 3, 1, 6, 1, 9, 1, 12, 9, 1, 15, 27, 1, 18, 54, 1, 21, 90, 27, 1, 24, 135, 108, 1, 27, 189, 270, 1, 30, 252, 540, 81, 1, 33, 324, 945, 405, 1, 36, 405, 1512, 1215, 1, 39, 495, 2268, 2835, 243, 1, 42, 594, 3240, 5670, 1458, 1, 45, 702, 4455, 10206, 5103, 1, 48, 819, 5940, 17010, 13608, 729]

cp's OEIS Frontend

A317496 Triangle T(n,k) = T(n-1,k) + 3*T(n-3,k-1) for k = 0..floor(n/3) with T(0,0) = 1, T(n,k) = 0 for n or k < 0, read by rows.

Table of values

List of values