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.

A221696 Number of 4Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction.

Table of values

n a(n)
1 1
2 987
3 63676
4 7033429
5 659020617
6 64509677154
7 6233675847228
8 604346923784252
9 58538232535028520
10 5671250113728678882
11 549411330594167686392
12 53225495837252796349285
13 5156336905625087231654148

List of values

[1, 987, 63676, 7033429, 659020617, 64509677154, 6233675847228, 604346923784252, 58538232535028520, 5671250113728678882, 549411330594167686392, 53225495837252796349285, 5156336905625087231654148]