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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.

A278192 Number of 5Xn 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 1532
3 347116
4 91270219
5 23124026160
6 5858713218010
7 1482450100931615
8 375049865320978231
9 94879541460515598902
10 24002203229663363493985
11 6071950545418789283104046
12 1536048854453696521513657702

List of values

[0, 1532, 347116, 91270219, 23124026160, 5858713218010, 1482450100931615, 375049865320978231, 94879541460515598902, 24002203229663363493985, 6071950545418789283104046, 1536048854453696521513657702]

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

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