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.

A260986 Numbers n such that H(n)/H(n^2) is a new record, where H(n) = A000120(n) is the sum of the binary digits of n.

Table of values

n a(n)
1 1
2 23
3 111
4 479
5 1471
6 6015
7 24319
8 28415
9 490495
10 6025215
11 8122367
12 98549759
13 132104191
14 1593769983
15 1862205439
16 29930291199
17 479961546751
18 514321285119
19 8237743079423
20 131872659079167
21 136270705590271
22 35461448750596095
23 7998111458938322943
24 9151032963545169919

List of values

[1, 23, 111, 479, 1471, 6015, 24319, 28415, 490495, 6025215, 8122367, 98549759, 132104191, 1593769983, 1862205439, 29930291199, 479961546751, 514321285119, 8237743079423, 131872659079167, 136270705590271, 35461448750596095, 7998111458938322943, 9151032963545169919]