A173388 - cp's OEIS frontend

A173388 a(n) = a(n - 3) + a(n - 4) if n is even, else a(n - 2) + a(n - 3).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	2
7	4
8	4
9	6
10	6
11	10
12	10
13	16
14	16
15	26
16	26
17	42
18	42
19	68
20	68
21	110
22	110
23	178
24	178
25	288
26	288
27	466
28	466
29	754
30	754
31	1220
32	1220
33	1974
34	1974
35	3194
36	3194
37	5168
38	5168
39	8362
40	8362
41	13530
42	13530
43	21892
44	21892
45	35422
46	35422
47	57314
48	57314
49	92736
50	92736

[1, 1, 1, 1, 2, 2, 2, 4, 4, 6, 6, 10, 10, 16, 16, 26, 26, 42, 42, 68, 68, 110, 110, 178, 178, 288, 288, 466, 466, 754, 754, 1220, 1220, 1974, 1974, 3194, 3194, 5168, 5168, 8362, 8362, 13530, 13530, 21892, 21892, 35422, 35422, 57314, 57314, 92736, 92736]

cp's OEIS Frontend

A173388 a(n) = a(n - 3) + a(n - 4) if n is even, else a(n - 2) + a(n - 3).

Table of values

List of values