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.

A012132 Numbers z such that x*(x+1) + y*(y+1) = z*(z+1) is solvable in positive integers x,y.

Table of values

n a(n)
1 3
2 6
3 8
4 10
5 11
6 13
7 15
8 16
9 18
10 20
11 21
12 23
13 26
14 27
15 28
16 31
17 33
18 36
19 37
20 38
21 40
22 41
23 43
24 44
25 45
26 46
27 48
28 49
29 51
30 52
31 53
32 54
33 55
34 56
35 57
36 58
37 59
38 61
39 62
40 63
41 64
42 66
43 67
44 68
45 71
46 73
47 74
48 75
49 76
50 77
51 78
52 80
53 81
54 83
55 86
56 88
57 89
58 91
59 92
60 93

List of values

[3, 6, 8, 10, 11, 13, 15, 16, 18, 20, 21, 23, 26, 27, 28, 31, 33, 36, 37, 38, 40, 41, 43, 44, 45, 46, 48, 49, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 64, 66, 67, 68, 71, 73, 74, 75, 76, 77, 78, 80, 81, 83, 86, 88, 89, 91, 92, 93]

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

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