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.

A213481 Number of triples (w,x,y) with all terms in {0,...,n} and |w-x| + |x-y| <= w+x+y.

Table of values

n a(n)
0 1
1 7
2 25
3 59
4 117
5 202
6 323
7 482
8 689
9 945
10 1261
11 1637
12 2085
13 2604
14 3207
15 3892
16 4673
17 5547
18 6529
19 7615
20 8821
21 10142
22 11595
23 13174
24 14897
25 16757
26 18773
27 20937
28 23269
29 25760
30 28431
31 31272
32 34305
33 37519
34 40937
35 44547
36 48373
37 52402
38 56659

List of values

[1, 7, 25, 59, 117, 202, 323, 482, 689, 945, 1261, 1637, 2085, 2604, 3207, 3892, 4673, 5547, 6529, 7615, 8821, 10142, 11595, 13174, 14897, 16757, 18773, 20937, 23269, 25760, 28431, 31272, 34305, 37519, 40937, 44547, 48373, 52402, 56659]