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.

A213485 Number of (w,x,y) with all terms in {0,...,n} and |w-x|+|x-y|+|y-w| != w+x+y.

Table of values

n a(n)
0 0
1 4
2 20
3 54
4 109
5 191
6 309
7 469
8 674
9 930
10 1246
11 1628
12 2079
13 2605
14 3215
15 3915
16 4708
17 5600
18 6600
19 7714
20 8945
21 10299
22 11785
23 13409
24 15174
25 17086
26 19154
27 21384
28 23779
29 26345
30 29091
31 32023
32 35144
33 38460
34 41980
35 45710
36 49653
37 53815
38 58205

List of values

[0, 4, 20, 54, 109, 191, 309, 469, 674, 930, 1246, 1628, 2079, 2605, 3215, 3915, 4708, 5600, 6600, 7714, 8945, 10299, 11785, 13409, 15174, 17086, 19154, 21384, 23779, 26345, 29091, 32023, 35144, 38460, 41980, 45710, 49653, 53815, 58205]