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.

A271513 Number of ordered ways to write n as w^2 + x^2 + y^2 + z^2 with 3*x^2 + 4*y^2 + 9*z^2 a square, where w, x, y and z are nonnegative integers.

Table of values

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

List of values

[1, 3, 2, 1, 4, 6, 3, 2, 2, 5, 6, 1, 2, 5, 4, 2, 4, 4, 3, 2, 6, 5, 1, 1, 3, 8, 6, 2, 4, 6, 6, 4, 2, 3, 8, 3, 7, 7, 1, 6, 6, 8, 6, 1, 2, 11, 7, 1, 2, 12, 8, 2, 7, 5, 9, 4, 4, 4, 7, 2, 4, 9, 4, 7, 4, 11, 6, 1, 5, 8, 7]