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.

A355461 Squarefree numbers d of the form r^2*m^2 + 4*r, where r and m are odd positive integers, such that Q(sqrt(d)) has class number 1.

Table of values

n a(n)
1 5
2 13
3 21
4 29
5 53
6 173
7 237
8 293
9 437
10 453
11 1133
12 1253

List of values

[5, 13, 21, 29, 53, 173, 237, 293, 437, 453, 1133, 1253]

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

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