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.

A234351 Number of non-equivalent (mod D_3) ways to arrange 3 indistinguishable points on a triangular grid of side n so that no three points are collinear.

Table of values

n a(n)
2 1
3 5
4 22
5 77
6 217
7 530
8 1149
9 2288
10 4231
11 7400
12 12322
13 19725
14 30486
15 45768
16 66917
17 95669

List of values

[1, 5, 22, 77, 217, 530, 1149, 2288, 4231, 7400, 12322, 19725, 30486, 45768, 66917, 95669]