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.

A303539 Number of ordered pairs (k, m) with 0 <= k <= m such that n - binomial(2*k,k) - binomial(2*m,m) can be written as the sum of two squares.

Table of values

n a(n)
1 0
2 1
3 2
4 3
5 2
6 2
7 3
8 4
9 3
10 2
11 3
12 6
13 4
14 2
15 2
16 4
17 4
18 2
19 2
20 5
21 5
22 5
23 4
24 4
25 4
26 4
27 4
28 5
29 4
30 5
31 4
32 4
33 3
34 4
35 3
36 4
37 4
38 5
39 6
40 5
41 5
42 5
43 4
44 7
45 3
46 3
47 4
48 6
49 4
50 2
51 3
52 5
53 6
54 3
55 4
56 5
57 6
58 5
59 2
60 5
61 4
62 5
63 3
64 2
65 4
66 5
67 4
68 3
69 3
70 3
71 6
72 7
73 5
74 5
75 6
76 10
77 6
78 3
79 4
80 8

List of values

[0, 1, 2, 3, 2, 2, 3, 4, 3, 2, 3, 6, 4, 2, 2, 4, 4, 2, 2, 5, 5, 5, 4, 4, 4, 4, 4, 5, 4, 5, 4, 4, 3, 4, 3, 4, 4, 5, 6, 5, 5, 5, 4, 7, 3, 3, 4, 6, 4, 2, 3, 5, 6, 3, 4, 5, 6, 5, 2, 5, 4, 5, 3, 2, 4, 5, 4, 3, 3, 3, 6, 7, 5, 5, 6, 10, 6, 3, 4, 8]