A318772 - cp's OEIS frontend

A318772 Triangle read by rows: T(0,0) = 1; T(n,k) = T(n-1,k) + 3 * T(n-4,k-1) for k = 0..floor(n/4); T(n,k)=0 for n or k < 0.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	3
6	1
7	6
8	1
9	9
10	1
11	12
12	1
13	15
14	9
15	1
16	18
17	27
18	1
19	21
20	54
21	1
22	24
23	90
24	1
25	27
26	135
27	27
28	1
29	30
30	189
31	108
32	1
33	33
34	252
35	270
36	1
37	36
38	324
39	540
40	1
41	39
42	405
43	945
44	81
45	1
46	42
47	495
48	1512
49	405
50	1
51	45
52	594
53	2268
54	1215
55	1
56	48
57	702
58	3240
59	2835
60	1
61	51
62	819
63	4455
64	5670
65	243
66	1
67	54
68	945
69	5940
70	10206
71	1458

[1, 1, 1, 1, 1, 3, 1, 6, 1, 9, 1, 12, 1, 15, 9, 1, 18, 27, 1, 21, 54, 1, 24, 90, 1, 27, 135, 27, 1, 30, 189, 108, 1, 33, 252, 270, 1, 36, 324, 540, 1, 39, 405, 945, 81, 1, 42, 495, 1512, 405, 1, 45, 594, 2268, 1215, 1, 48, 702, 3240, 2835, 1, 51, 819, 4455, 5670, 243, 1, 54, 945, 5940, 10206, 1458]

cp's OEIS Frontend

A318772 Triangle read by rows: T(0,0) = 1; T(n,k) = T(n-1,k) + 3 * T(n-4,k-1) for k = 0..floor(n/4); T(n,k)=0 for n or k < 0.

Table of values

List of values