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A233916 Number of (n+1)X(7+1) 0..7 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 30, and no two adjacent values equal 1

%I

%S 559736,28936484,1317291048,76393662524,3816435022128,224247343748408,

%T 11458028594887856,672061212550600320,34642386448309478976,

%U 2024556302397626065444,104880714157688434998824

%N Number of (n+1)X(7+1) 0..7 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 30, and no two adjacent values equal

%C Column 7 of A233917

%H R. H. Hardin, <a href="/A233916/b233916.txt">Table of n, a(n) for n = 1..22</a>

%e Some solutions for n=1

%e ..6..2..0..2..3..2..6..2....6..2..3..6..3..5..3..2....4..1..4..1..4..5..1..5

%e ..4..5..1..5..7..5..4..1....4..5..7..5..7..4..0..4....6..2..0..2..0..3..0..3

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 17 2013

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Last modified September 20 05:17 EDT 2021. Contains 347577 sequences. (Running on oeis4.)