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.

A233068 Number of n X 3 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 in row major order.

Table of values

n a(n)
1 5
2 50
3 582
4 6854
5 80811
6 952869
7 11235652
8 132484030
9 1562171807
10 18420188169
11 217199754056
12 2561088558394
13 30198812298187
14 356086188910685
15 4198753668883532
16 49509171995392534
17 583782308982449751

List of values

[5, 50, 582, 6854, 80811, 952869, 11235652, 132484030, 1562171807, 18420188169, 217199754056, 2561088558394, 30198812298187, 356086188910685, 4198753668883532, 49509171995392534, 583782308982449751]