A318619 - cp's OEIS frontend

A318619 a(0) = 0, a(1) = 1; for n > 1, a(n) = Sum_{k=0..n-2} a(k) XOR a(n-k-2).

n	a(n)
0	0
1	1
2	0
3	2
4	0
5	6
6	6
7	18
8	26
9	66
10	110
11	242
12	450
13	922
14	1826
15	3674
16	7290
17	14586
18	29178
19	58410
20	116538
21	233258
22	466114
23	932426
24	1864586
25	3729274
26	7457386
27	14915578
28	29828762
29	59659322
30	119313866
31	238631866
32	477253498
33	954516442
34	1909012410
35	3818036378
36	7636034202

[0, 1, 0, 2, 0, 6, 6, 18, 26, 66, 110, 242, 450, 922, 1826, 3674, 7290, 14586, 29178, 58410, 116538, 233258, 466114, 932426, 1864586, 3729274, 7457386, 14915578, 29828762, 59659322, 119313866, 238631866, 477253498, 954516442, 1909012410, 3818036378, 7636034202]

cp's OEIS Frontend

A318619 a(0) = 0, a(1) = 1; for n > 1, a(n) = Sum_{k=0..n-2} a(k) XOR a(n-k-2).

Table of values

List of values