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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.

A278187 Number of nX6 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 6381
3 6715738
4 6196345742
5 5858713218010
6 5537142857552112
7 5232919178331757631
8 4945638025497366239942
9 4674127103296221122266834
10 4417520697715221210576165981

List of values

[0, 6381, 6715738, 6196345742, 5858713218010, 5537142857552112, 5232919178331757631, 4945638025497366239942, 4674127103296221122266834, 4417520697715221210576165981]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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