A000773 - cp's OEIS frontend

A000773 Number of numbers == 0 (mod 3) in range 2^n to 2^(n+1) with odd number of 1's in binary expansion.

n	a(n)
1	0
2	0
3	0
4	1
5	1
6	6
7	8
8	29
9	45
10	130
11	220
12	561
13	1001
14	2366
15	4368
16	9829
17	18565
18	40410
19	77540
20	164921
21	320001
22	669526
23	1309528
24	2707629
25	5326685
26	10919090
27	21572460
28	43942081
29	87087001
30	176565486
31	350739488
32	708653429
33	1410132405
34	2841788170
35	5662052980

[0, 0, 0, 1, 1, 6, 8, 29, 45, 130, 220, 561, 1001, 2366, 4368, 9829, 18565, 40410, 77540, 164921, 320001, 669526, 1309528, 2707629, 5326685, 10919090, 21572460, 43942081, 87087001, 176565486, 350739488, 708653429, 1410132405, 2841788170, 5662052980]

cp's OEIS Frontend

A000773 Number of numbers == 0 (mod 3) in range 2^n to 2^(n+1) with odd number of 1's in binary expansion.

Table of values

List of values