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.

A333459 Number of vertices in an diagonal-edged (or diamond-shaped) checkerboard with width and height 2*n-1 (see Comments in A333434 for definition).

Table of values

n a(n)
1 5
2 69
3 785
4 4177
5 12681
6 33601
7 71777
8 125389
9 238801
10 379793
11 548293
12 878397
13 1203101
14 1673693
15 2311477
16 3063609
17 3934365
18 4931077
19 6501545
20 7873689
21 9852941
22 12071685
23 14067849
24 17728005
25 20417893
26 24047817
27 29003717

List of values

[5, 69, 785, 4177, 12681, 33601, 71777, 125389, 238801, 379793, 548293, 878397, 1203101, 1673693, 2311477, 3063609, 3934365, 4931077, 6501545, 7873689, 9852941, 12071685, 14067849, 17728005, 20417893, 24047817, 29003717]