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.

A269508 Number of 4Xn arrays containing n copies of 0..4-1 avoiding the pattern down-up in every row and column.

Table of values

n a(n)
1 8
2 600
3 18332
4 480440
5 13522204
6 492613956
7 18677195738
8 753228526960
9 29963202454514
10 1236592684106800

List of values

[8, 600, 18332, 480440, 13522204, 492613956, 18677195738, 753228526960, 29963202454514, 1236592684106800]