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.

A336623 First member of the Diophantine pair (m, k) that satisfies 8*(m^2 + m) = k^2 + k; a(n) = m.

Table of values

n a(n)
0 0
1 5
2 11
3 186
4 390
5 6335
6 13265
7 215220
8 450636
9 7311161
10 15308375
11 248364270
12 520034130
13 8437074035
14 17665852061
15 286612152936
16 600118935960
17 9736376125805
18 20386377970595
19 330750176124450
20 692536732064286
21 11235769612105511
22 23525862512215145
23 381685416635462940

List of values

[0, 5, 11, 186, 390, 6335, 13265, 215220, 450636, 7311161, 15308375, 248364270, 520034130, 8437074035, 17665852061, 286612152936, 600118935960, 9736376125805, 20386377970595, 330750176124450, 692536732064286, 11235769612105511, 23525862512215145, 381685416635462940]