A318406 - cp's OEIS frontend

A318406 For n > 4, a(n) = a(n-1) + a(n-2) if n is even and a(n) = 3*a(n-2) + a(n-4) - a(n-5) if n is odd; a(0) = 0, a(1) = 1, a(2) = 1, a(3) = 2, and a(4) = 3.

n	a(n)
0	0
1	1
2	1
3	2
4	3
5	7
6	10
7	22
8	32
9	70
10	102
11	222
12	324
13	704
14	1028
15	2232
16	3260
17	7076
18	10336
19	22432
20	32768
21	71112
22	103880
23	225432
24	329312
25	714640
26	1043952
27	2265472
28	3309424
29	7181744
30	10491168
31	22766752
32	33257920
33	72172576
34	105430496
35	228793312
36	334223808
37	725294592
38	1059518400
39	2299246592
40	3358764992

[0, 1, 1, 2, 3, 7, 10, 22, 32, 70, 102, 222, 324, 704, 1028, 2232, 3260, 7076, 10336, 22432, 32768, 71112, 103880, 225432, 329312, 714640, 1043952, 2265472, 3309424, 7181744, 10491168, 22766752, 33257920, 72172576, 105430496, 228793312, 334223808, 725294592, 1059518400, 2299246592, 3358764992]

cp's OEIS Frontend

A318406 For n > 4, a(n) = a(n-1) + a(n-2) if n is even and a(n) = 3*a(n-2) + a(n-4) - a(n-5) if n is odd; a(0) = 0, a(1) = 1, a(2) = 1, a(3) = 2, and a(4) = 3.

Table of values

List of values