cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A143115 a(n) = the smallest positive multiple of n that has exactly n 1's in its binary representation.

Table of values

n a(n)
1 1
2 6
3 21
4 60
5 55
6 126
7 623
8 2040
9 1503
10 3070
11 3839
12 16380
13 16367
14 94206
15 96255
16 1048560
17 483327
18 524286
19 1040383
20 4194300
21 5767167
22 16515070
23 16252927
24 134217720
25 66584575
26 251658238
27 402651135
28 5234491388
29 1073741791

List of values

[1, 6, 21, 60, 55, 126, 623, 2040, 1503, 3070, 3839, 16380, 16367, 94206, 96255, 1048560, 483327, 524286, 1040383, 4194300, 5767167, 16515070, 16252927, 134217720, 66584575, 251658238, 402651135, 5234491388, 1073741791]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.