A255125 - cp's OEIS frontend

A255125 Number of times a multiple of four is encountered when iterating from 2^(n+1)-2 to (2^n)-2 with the map x -> x - (number of runs in binary representation of x).

n	a(n)
0	1
1	0
2	1
3	1
4	1
5	3
6	6
7	13
8	26
9	47
10	81
11	140
12	253
13	482
14	949
15	1875
16	3666
17	7088
18	13614
19	26100
20	50082
21	96246
22	185131
23	356123
24	684758
25	1316197
26	2530257
27	4868019
28	9378335
29	18096921
30	34974646
31	67669905
32	130998912
33	253565649
34	490501587
35	947992195
36	1830664188
37	3533571444

[1, 0, 1, 1, 1, 3, 6, 13, 26, 47, 81, 140, 253, 482, 949, 1875, 3666, 7088, 13614, 26100, 50082, 96246, 185131, 356123, 684758, 1316197, 2530257, 4868019, 9378335, 18096921, 34974646, 67669905, 130998912, 253565649, 490501587, 947992195, 1830664188, 3533571444]

cp's OEIS Frontend

A255125 Number of times a multiple of four is encountered when iterating from 2^(n+1)-2 to (2^n)-2 with the map x -> x - (number of runs in binary representation of x).

Table of values

List of values