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.

A269090 Number of n X n 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.

Table of values

n a(n)
1 0
2 96
3 31296
4 37963968
5 211625837280
6 5826856525990272
7 819944297332124826720
8 600994567853371717147309536
9 2321584677123190401202986846749664
10 47631920426007575412576023256743509016160

List of values

[0, 96, 31296, 37963968, 211625837280, 5826856525990272, 819944297332124826720, 600994567853371717147309536, 2321584677123190401202986846749664, 47631920426007575412576023256743509016160]

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

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