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.

A283571 Number of nX7 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 26
2 2832
3 104464
4 3890056
5 129527524
6 4173039716
7 129997769458
8 3965206666608
9 118919078661476
10 3520469545329364
11 103128721861954074
12 2995091644500263428
13 86357662212925835570
14 2474720063522591410712
15 70543862532039328231208

List of values

[26, 2832, 104464, 3890056, 129527524, 4173039716, 129997769458, 3965206666608, 118919078661476, 3520469545329364, 103128721861954074, 2995091644500263428, 86357662212925835570, 2474720063522591410712, 70543862532039328231208]

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

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