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.

A212904 Number of (w,x,y,z) with all terms in {0,...,n} and |w-x|+|x-y+|y-z|=n.

Table of values

n a(n)
0 1
1 6
2 24
3 58
4 118
5 202
6 324
7 478
8 682
9 926
10 1232
11 1586
12 2014
13 2498
14 3068
15 3702
16 4434
17 5238
18 6152
19 7146
20 8262
21 9466
22 10804
23 12238
24 13818
25 15502
26 17344
27 19298
28 21422
29 23666
30 26092
31 28646
32 31394
33 34278
34 37368
35 40602
36 44054
37 47658
38 51492

List of values

[1, 6, 24, 58, 118, 202, 324, 478, 682, 926, 1232, 1586, 2014, 2498, 3068, 3702, 4434, 5238, 6152, 7146, 8262, 9466, 10804, 12238, 13818, 15502, 17344, 19298, 21422, 23666, 26092, 28646, 31394, 34278, 37368, 40602, 44054, 47658, 51492]