A265755 - cp's OEIS frontend

A265755 a(n) = a(n-1) + a(n-2) if n is even and a(n) = a(n-3) + a(n-4) if n is odd, with a(0) = a(1) = a(2) = 0 and a(3) = 1.

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	0
6	1
7	2
8	3
9	1
10	4
11	5
12	9
13	5
14	14
15	14
16	28
17	19
18	47
19	42
20	89
21	66
22	155
23	131
24	286
25	221
26	507
27	417
28	924
29	728
30	1652
31	1341
32	2993
33	2380
34	5373
35	4334
36	9707
37	7753
38	17460
39	14041
40	31501
41	25213
42	56714
43	45542
44	102256
45	81927
46	184183
47	147798
48	331981
49	266110
50	598091
51	479779
52	1077870
53	864201
54	1942071
55	1557649

[0, 0, 0, 1, 1, 0, 1, 2, 3, 1, 4, 5, 9, 5, 14, 14, 28, 19, 47, 42, 89, 66, 155, 131, 286, 221, 507, 417, 924, 728, 1652, 1341, 2993, 2380, 5373, 4334, 9707, 7753, 17460, 14041, 31501, 25213, 56714, 45542, 102256, 81927, 184183, 147798, 331981, 266110, 598091, 479779, 1077870, 864201, 1942071, 1557649]

cp's OEIS Frontend

A265755 a(n) = a(n-1) + a(n-2) if n is even and a(n) = a(n-3) + a(n-4) if n is odd, with a(0) = a(1) = a(2) = 0 and a(3) = 1.

Table of values

List of values