A317497 - cp's OEIS frontend

A317497 Triangle T(n,k) = 3*T(n-1,k) + T(n-3,k-1) for k = 0..floor(n/3) with T(0,0) = 1 and T(n,k) = 0 for n or k < 0, read by rows.

n	a(n)
0	1
1	3
2	9
3	27
4	1
5	81
6	6
7	243
8	27
9	729
10	108
11	1
12	2187
13	405
14	9
15	6561
16	1458
17	54
18	19683
19	5103
20	270
21	1
22	59049
23	17496
24	1215
25	12
26	177147
27	59049
28	5103
29	90
30	531441
31	196830
32	20412
33	540
34	1
35	1594323
36	649539
37	78732
38	2835
39	15
40	4782969
41	2125764
42	295245
43	13608
44	135
45	14348907
46	6908733
47	1082565
48	61236
49	945
50	1

[1, 3, 9, 27, 1, 81, 6, 243, 27, 729, 108, 1, 2187, 405, 9, 6561, 1458, 54, 19683, 5103, 270, 1, 59049, 17496, 1215, 12, 177147, 59049, 5103, 90, 531441, 196830, 20412, 540, 1, 1594323, 649539, 78732, 2835, 15, 4782969, 2125764, 295245, 13608, 135, 14348907, 6908733, 1082565, 61236, 945, 1]

cp's OEIS Frontend

A317497 Triangle T(n,k) = 3*T(n-1,k) + T(n-3,k-1) for k = 0..floor(n/3) with T(0,0) = 1 and T(n,k) = 0 for n or k < 0, read by rows.

Table of values

List of values