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.

A283578 Number of 7Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.

Table of values

n a(n)
1 0
2 3232
3 194173
4 4441052
5 164714523
6 4558585174
7 129997769458
8 3650965394740
9 99090078168196
10 2687260014584534
11 71764403257467215
12 1902366721060350320
13 50085438054862185785
14 1310060351650654162702
15 34098186251976982332364

List of values

[0, 3232, 194173, 4441052, 164714523, 4558585174, 129997769458, 3650965394740, 99090078168196, 2687260014584534, 71764403257467215, 1902366721060350320, 50085438054862185785, 1310060351650654162702, 34098186251976982332364]

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

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