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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.

A061408 For each y >= 1 there are only finitely many values of x >= 1 such that x-y and x+y are both positive squares; list all such pairs (x,y) ordered by values of y; sequence gives y values.

Table of values

n a(n)
0 4
1 6
2 8
3 10
4 12
5 12
6 14
7 16
8 16
9 18
10 20
11 20
12 22
13 24
14 24
15 24
16 26
17 28
18 28
19 30
20 30
21 32
22 32
23 34
24 36
25 36
26 36
27 38
28 40
29 40
30 40
31 42
32 42
33 44
34 44
35 46
36 48
37 48
38 48
39 48
40 50
41 52
42 52
43 54
44 54
45 56
46 56
47 56
48 58
49 60
50 60
51 60
52 60
53 62
54 64
55 64
56 64
57 66
58 66
59 68
60 68
61 70
62 70
63 72

List of values

[4, 6, 8, 10, 12, 12, 14, 16, 16, 18, 20, 20, 22, 24, 24, 24, 26, 28, 28, 30, 30, 32, 32, 34, 36, 36, 36, 38, 40, 40, 40, 42, 42, 44, 44, 46, 48, 48, 48, 48, 50, 52, 52, 54, 54, 56, 56, 56, 58, 60, 60, 60, 60, 62, 64, 64, 64, 66, 66, 68, 68, 70, 70, 72]

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

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