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.

A253663 Number of positive solutions to x^2+y^2+z^2 <= n^2.

Table of values

n a(n)
0 0
1 0
2 1
3 7
4 17
5 38
6 78
7 127
8 196
9 296
10 410
11 564
12 738
13 958
14 1220
15 1514
16 1848
17 2235
18 2686
19 3175
20 3719
21 4365
22 5007
23 5758
24 6568
25 7442
26 8415
27 9477
28 10597
29 11779
30 13100
31 14459
32 15954
33 17566
34 19231
35 21029
36 22916
37 24930
38 27030
39 29293
40 31616
41 34103
42 36732
43 39459

List of values

[0, 0, 1, 7, 17, 38, 78, 127, 196, 296, 410, 564, 738, 958, 1220, 1514, 1848, 2235, 2686, 3175, 3719, 4365, 5007, 5758, 6568, 7442, 8415, 9477, 10597, 11779, 13100, 14459, 15954, 17566, 19231, 21029, 22916, 24930, 27030, 29293, 31616, 34103, 36732, 39459]

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

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