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.

A349611 Number of solutions to x^2 + y^2 + z^2 + w^2 <= n^2, where x, y, z, w are positive odd integers.

Table of values

n a(n)
0 0
1 0
2 1
3 1
4 5
5 11
6 32
7 44
8 82
9 120
10 207
11 277
12 405
13 541
14 768
15 966
16 1272
17 1592
18 2087
19 2489
20 3103
21 3719
22 4588
23 5348
24 6386
25 7522
26 8891
27 10175
28 11909
29 13623
30 15818
31 17742
32 20278
33 22720
34 25923
35 28917
36 32361
37 36031
38 40368
39 44488
40 49400
41 54358
42 60377
43 65835
44 72341

List of values

[0, 0, 1, 1, 5, 11, 32, 44, 82, 120, 207, 277, 405, 541, 768, 966, 1272, 1592, 2087, 2489, 3103, 3719, 4588, 5348, 6386, 7522, 8891, 10175, 11909, 13623, 15818, 17742, 20278, 22720, 25923, 28917, 32361, 36031, 40368, 44488, 49400, 54358, 60377, 65835, 72341]