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.

A196454 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,2,4,1 for x=0,1,2,3,4.

This page as a plain text file.
%I A196454 #7 Jun 02 2025 04:24:36
%S A196454 12,146,1232,15274,249402,3707781,46887621,578160718,7394096617,
%T A196454 96338727461,1258078944815,16370595753240,212274372772624,
%U A196454 2750178418606822,35652972674573032,462472339632802800
%N A196454 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,2,4,1 for x=0,1,2,3,4.
%C A196454 Every 0 is next to 0 3's, every 1 is next to 1 0's, every 2 is next to 2 2's, every 3 is next to 3 4's, every 4 is next to 4 1's
%C A196454 Column 6 of A196456
%H A196454 R. H. Hardin, <a href="/A196454/b196454.txt">Table of n, a(n) for n = 1..200</a>
%e A196454 Some solutions for n=4
%e A196454 ..2..2..2..2..2..0....0..0..1..1..0..0....0..0..2..2..1..0....1..0..0..1..2..2
%e A196454 ..2..1..1..1..2..0....1..2..2..2..2..2....1..1..2..2..1..1....1..1..1..1..2..2
%e A196454 ..2..0..0..0..2..0....1..2..0..0..1..2....2..2..0..0..0..1....0..2..2..0..1..1
%e A196454 ..2..2..2..2..2..0....0..2..2..2..2..2....2..2..0..0..0..1....0..2..2..1..1..0
%K A196454 nonn
%O A196454 1,1
%A A196454 _R. H. Hardin_ Oct 02 2011