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.

A213499 Number of (w,x,y) with all terms in {0,...,n} and w != min(|w-x|, |x-y|).

Table of values

n a(n)
0 0
1 4
2 17
3 47
4 96
5 176
6 286
7 439
8 634
9 885
10 1188
11 1561
12 1997
13 2515
14 3108
15 3796
16 4569
17 5451
18 6429
19 7528
20 8735
21 10076
22 11535
23 13142
24 14878
25 16774
26 18811
27 21021
28 23382
29 25930
30 28640
31 31549
32 34632
33 37927
34 41406
35 45111
36 49011
37 53149
38 57494

List of values

[0, 4, 17, 47, 96, 176, 286, 439, 634, 885, 1188, 1561, 1997, 2515, 3108, 3796, 4569, 5451, 6429, 7528, 8735, 10076, 11535, 13142, 14878, 16774, 18811, 21021, 23382, 25930, 28640, 31549, 34632, 37927, 41406, 45111, 49011, 53149, 57494]