A357750 - cp's OEIS frontend

A357750 a(n) is the least k such that B(k^2) - B(k) = n, where B(m) is the binary weight A000120(m).

n	a(n)
0	0
1	5
2	11
3	21
4	45
5	75
6	217
7	331
8	181
9	789
10	1241
11	2505
12	5701
13	5221
14	11309
15	19637
16	43151
17	69451
18	82709
19	166027
20	346389
21	607307
22	689685
23	1458357
24	1380917
25	2507541
26	5906699
27	2965685
28	5931189
29	11862197
30	47448787
31	82188309
32	57804981
33	94905541
34	188883211
35	373457573
36	640164021

[0, 5, 11, 21, 45, 75, 217, 331, 181, 789, 1241, 2505, 5701, 5221, 11309, 19637, 43151, 69451, 82709, 166027, 346389, 607307, 689685, 1458357, 1380917, 2507541, 5906699, 2965685, 5931189, 11862197, 47448787, 82188309, 57804981, 94905541, 188883211, 373457573, 640164021]

cp's OEIS Frontend

A357750 a(n) is the least k such that B(k^2) - B(k) = n, where B(m) is the binary weight A000120(m).

Table of values

List of values