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.

A252067 Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 or 4.

Table of values

n a(n)
1 92
2 152
3 1497
4 21862
5 480464
6 16789564
7 896763044
8 73759241675
9 9393184984375
10 1838801806417480
11 553960321837762317
12 257519518174289401204
13 184540608154581393175420
14 203698879433082432079178119

List of values

[92, 152, 1497, 21862, 480464, 16789564, 896763044, 73759241675, 9393184984375, 1838801806417480, 553960321837762317, 257519518174289401204, 184540608154581393175420, 203698879433082432079178119]

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

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