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.

A226111 Composite squarefree numbers n such that the ratio (n - 1/2)/(p(i) + 1/2) is an integer, where p(i) are the prime factors of n.

Table of values

n a(n)
1 260813
2 960323
3 4572113
4 5991098
5 18912713
6 37481945
7 68688458
8 214337813
9 1418459963
10 1488523838
11 1905782603
12 1906387718
13 2416383938
14 3866147051
15 6153859058
16 6927221438
17 10696723538
18 12000312419
19 24529142138
20 43004079563
21 43648495313
22 54750300413

List of values

[260813, 960323, 4572113, 5991098, 18912713, 37481945, 68688458, 214337813, 1418459963, 1488523838, 1905782603, 1906387718, 2416383938, 3866147051, 6153859058, 6927221438, 10696723538, 12000312419, 24529142138, 43004079563, 43648495313, 54750300413]

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

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