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.

A162959 The pairs (x,y) such that (x^2 + y^2)/(x*y + 1) is a perfect square, i.e., 4.

Table of values

n a(n)
1 0
2 2
3 2
4 8
5 8
6 30
7 30
8 112
9 112
10 418
11 418
12 1560
13 1560
14 5822
15 5822
16 21728
17 21728
18 81090
19 81090
20 302632
21 302632
22 1129438
23 1129438
24 4215120
25 4215120
26 15731042
27 15731042
28 58709048
29 58709048
30 219105150
31 219105150
32 817711552
33 817711552
34 3051741058
35 3051741058
36 11389252680
37 11389252680

List of values

[0, 2, 2, 8, 8, 30, 30, 112, 112, 418, 418, 1560, 1560, 5822, 5822, 21728, 21728, 81090, 81090, 302632, 302632, 1129438, 1129438, 4215120, 4215120, 15731042, 15731042, 58709048, 58709048, 219105150, 219105150, 817711552, 817711552, 3051741058, 3051741058, 11389252680, 11389252680]

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

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