A140690 - cp's OEIS frontend

A140690 A positive integer n is included if n written in binary can be subdivided into a number of runs all of equal-length, the first run from the left consisting of all 1's, the next run consisting of all 0's, the next run consisting of all 1's, the next run consisting of all 0's, etc.

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	10
7	12
8	15
9	21
10	31
11	42
12	51
13	56
14	63
15	85
16	127
17	170
18	204
19	240
20	255
21	341
22	455
23	511
24	682
25	819
26	992
27	1023
28	1365
29	2047
30	2730
31	3276
32	3640
33	3855
34	4032
35	4095
36	5461
37	8191
38	10922
39	13107
40	16256
41	16383
42	21845
43	29127
44	31775
45	32767
46	43690
47	52428
48	61680

[1, 2, 3, 5, 7, 10, 12, 15, 21, 31, 42, 51, 56, 63, 85, 127, 170, 204, 240, 255, 341, 455, 511, 682, 819, 992, 1023, 1365, 2047, 2730, 3276, 3640, 3855, 4032, 4095, 5461, 8191, 10922, 13107, 16256, 16383, 21845, 29127, 31775, 32767, 43690, 52428, 61680]

cp's OEIS Frontend

A140690 A positive integer n is included if n written in binary can be subdivided into a number of runs all of equal-length, the first run from the left consisting of all 1's, the next run consisting of all 0's, the next run consisting of all 1's, the next run consisting of all 0's, etc.

Table of values

List of values