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.

A233731 Number of (n+1)X(6+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 6 and no adjacent elements equal.

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%I A233731 #6 Jul 23 2025 08:10:45
%S A233731 30260,631628,14802604,389230764,10577526052,297173770244,
%T A233731 8382657501872,239905202721744,6836811878013164,196682109947646076,
%U A233731 5621738544272692176,161957852533354058144,4633563231512519521944,133535514248052233170788
%N A233731 Number of (n+1)X(6+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 6 and no adjacent elements equal.
%C A233731 Column 6 of A233733
%H A233731 R. H. Hardin, <a href="/A233731/b233731.txt">Table of n, a(n) for n = 1..210</a>
%e A233731 Some solutions for n=1
%e A233731 ..1..0..2..0..2..0..2....3..2..3..2..0..3..0....1..0..1..0..1..3..1
%e A233731 ..3..2..1..2..3..1..3....2..0..1..0..1..2..1....0..2..3..1..3..2..3
%K A233731 nonn
%O A233731 1,1
%A A233731 _R. H. Hardin_, Dec 15 2013