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.

A239536 Number of (n+1)X(7+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order.

This page as a plain text file.
%I A239536 #5 Jul 23 2025 11:00:16
%S A239536 328,328,645504,17931608,4125560328,297124637920,39351464058085,
%T A239536 3747320422936526,425400186449108118,43933336870300437068
%N A239536 Number of (n+1)X(7+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order.
%C A239536 Column 7 of A239537
%e A239536 Some solutions for n=2
%e A239536 ..0..1..2..1..0..2..0..2....0..1..1..0..2..1..0..1....0..1..1..2..2..1..1..2
%e A239536 ..0..1..2..1..0..2..0..2....0..1..1..0..2..1..0..1....0..1..1..2..2..1..1..2
%e A239536 ..0..1..2..1..0..2..0..2....0..1..1..0..2..1..0..1....0..1..1..2..2..1..1..2
%K A239536 nonn
%O A239536 1,1
%A A239536 _R. H. Hardin_, Mar 21 2014

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

Content is available under The OEIS End-User License Agreement.