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.

A211176 Numbers n which are the hypotenuse of a Pythagorean triple with n' as a leg, where n' is the arithmetic derivative of n.

Table of values

n a(n)
1 125
2 625
3 23125
4 142805
5 210125
6 371293
7 7983625
8 9370805
9 25757525
10 50062025
11 120670225
12 489766225
13 881052625
14 1471596725
15 2307267625
16 2489771125
17 3145529225
18 3474871553
19 6975757441
20 7977558641

List of values

[125, 625, 23125, 142805, 210125, 371293, 7983625, 9370805, 25757525, 50062025, 120670225, 489766225, 881052625, 1471596725, 2307267625, 2489771125, 3145529225, 3474871553, 6975757441, 7977558641]

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

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