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.

A076520 n appears once if n is the sum of 2 nonzero squares in 1 way, twice if n is the sum of 2 squares in 2 ways, 3 times if n is the sum of 2 squares 3 ways etc.

Table of values

n a(n)
1 2
2 5
3 5
4 8
5 10
6 10
7 13
8 13
9 17
10 17
11 18
12 20
13 20
14 25
15 25
16 26
17 26
18 29
19 29
20 32
21 34
22 34
23 37
24 37
25 40
26 40
27 41
28 41
29 45
30 45
31 50
32 50
33 50
34 52
35 52
36 53
37 53
38 58
39 58
40 61
41 61
42 65
43 65
44 65
45 65
46 68
47 68
48 72
49 73
50 73
51 74
52 74
53 80
54 80
55 82
56 82
57 85
58 85
59 85
60 85
61 89
62 89
63 90
64 90
65 97
66 97
67 98
68 100
69 100

List of values

[2, 5, 5, 8, 10, 10, 13, 13, 17, 17, 18, 20, 20, 25, 25, 26, 26, 29, 29, 32, 34, 34, 37, 37, 40, 40, 41, 41, 45, 45, 50, 50, 50, 52, 52, 53, 53, 58, 58, 61, 61, 65, 65, 65, 65, 68, 68, 72, 73, 73, 74, 74, 80, 80, 82, 82, 85, 85, 85, 85, 89, 89, 90, 90, 97, 97, 98, 100, 100]

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

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