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.

A231757 Number of (n+1)X(n+1) 0..1 arrays with no element having a strict majority of its horizontal, diagonal and antidiagonal neighbors equal to one.

Table of values

n a(n)
1 9
2 136
3 5041
4 493695
5 175642009
6 216545491864
7 682267982467600
8 6184663140527966655
9 184835030323441507989529
10 17039092957711747812559207879
11 4549223325244087259619117440725081

List of values

[9, 136, 5041, 493695, 175642009, 216545491864, 682267982467600, 6184663140527966655, 184835030323441507989529, 17039092957711747812559207879, 4549223325244087259619117440725081]

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

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