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.

A278191 Number of 4Xn 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.

Table of values

n a(n)
1 0
2 200
3 13720
4 1075258
5 81691958
6 6196345742
7 469577175712
8 35577034730206
9 2695338849906758
10 204197662339944373
11 15469874074262345128
12 1171986102689397728682
13 88788773705648773915186

List of values

[0, 200, 13720, 1075258, 81691958, 6196345742, 469577175712, 35577034730206, 2695338849906758, 204197662339944373, 15469874074262345128, 1171986102689397728682, 88788773705648773915186]