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.

A281864 Number of sets of exactly four positive integers <= n having a square element sum.

Table of values

n a(n)
4 0
5 0
6 2
7 5
8 8
9 14
10 23
11 34
12 49
13 69
14 93
15 123
16 160
17 204
18 255
19 315
20 383
21 462
22 554
23 658
24 775
25 904
26 1046
27 1205
28 1384
29 1581
30 1797
31 2031
32 2282
33 2556
34 2857
35 3183
36 3535
37 3913
38 4316
39 4748
40 5211
41 5706
42 6235
43 6798
44 7393
45 8025
46 8696
47 9406
48 10159
49 10956
50 11793
51 12673
52 13599

List of values

[0, 0, 2, 5, 8, 14, 23, 34, 49, 69, 93, 123, 160, 204, 255, 315, 383, 462, 554, 658, 775, 904, 1046, 1205, 1384, 1581, 1797, 2031, 2282, 2556, 2857, 3183, 3535, 3913, 4316, 4748, 5211, 5706, 6235, 6798, 7393, 8025, 8696, 9406, 10159, 10956, 11793, 12673, 13599]