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.

A228059 Odd numbers of the form p^(1+4k) * r^2, where p is prime of the form 1+4m, r > 1, and gcd(p,r) = 1 that are closer to being perfect than previous terms.

Table of values

n a(n)
1 45
2 405
3 2205
4 26325
5 236925
6 1380825
7 1660725
8 35698725
9 3138290325
10 29891138805
11 73846750725
12 194401220013
13 194509436121
14 194581580193
15 194689796301
16 194798012409
17 194906228517
18 194942300553
19 195230876841
20 195339092949
21 195447309057
22 195699813309

List of values

[45, 405, 2205, 26325, 236925, 1380825, 1660725, 35698725, 3138290325, 29891138805, 73846750725, 194401220013, 194509436121, 194581580193, 194689796301, 194798012409, 194906228517, 194942300553, 195230876841, 195339092949, 195447309057, 195699813309]

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

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