A254006 - cp's OEIS frontend

A254006 a(0) = 1, a(n) = 3*a(n-2) if n mod 2 = 0, otherwise a(n) = 0.

n	a(n)
0	1
1	0
2	3
3	0
4	9
5	0
6	27
7	0
8	81
9	0
10	243
11	0
12	729
13	0
14	2187
15	0
16	6561
17	0
18	19683
19	0
20	59049
21	0
22	177147
23	0
24	531441
25	0
26	1594323
27	0
28	4782969
29	0
30	14348907
31	0
32	43046721
33	0
34	129140163
35	0
36	387420489
37	0
38	1162261467
39	0
40	3486784401
41	0
42	10460353203
43	0
44	31381059609
45	0
46	94143178827

[1, 0, 3, 0, 9, 0, 27, 0, 81, 0, 243, 0, 729, 0, 2187, 0, 6561, 0, 19683, 0, 59049, 0, 177147, 0, 531441, 0, 1594323, 0, 4782969, 0, 14348907, 0, 43046721, 0, 129140163, 0, 387420489, 0, 1162261467, 0, 3486784401, 0, 10460353203, 0, 31381059609, 0, 94143178827]

cp's OEIS Frontend

A254006 a(0) = 1, a(n) = 3*a(n-2) if n mod 2 = 0, otherwise a(n) = 0.

Table of values

List of values