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.

A213041 Number of triples (w,x,y) with all terms in {0..n} and 2*|w-x| = max(w,x,y) - min(w,x,y).

Table of values

n a(n)
0 1
1 2
2 7
3 12
4 21
5 30
6 43
7 56
8 73
9 90
10 111
11 132
12 157
13 182
14 211
15 240
16 273
17 306
18 343
19 380
20 421
21 462
22 507
23 552
24 601
25 650
26 703
27 756
28 813
29 870
30 931
31 992
32 1057
33 1122
34 1191
35 1260
36 1333
37 1406
38 1483
39 1560
40 1641
41 1722
42 1807
43 1892
44 1981
45 2070
46 2163
47 2256

List of values

[1, 2, 7, 12, 21, 30, 43, 56, 73, 90, 111, 132, 157, 182, 211, 240, 273, 306, 343, 380, 421, 462, 507, 552, 601, 650, 703, 756, 813, 870, 931, 992, 1057, 1122, 1191, 1260, 1333, 1406, 1483, 1560, 1641, 1722, 1807, 1892, 1981, 2070, 2163, 2256]