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A233913 Number of (n+1)X(4+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 #4 Dec 17 2013 16:12:20

%S 9612,138132,1813476,26954304,369978404,5494251884,76393662524,

%T 1131348498772,15846113265432,234199189701020,3298277776530524,

%U 48674865163210448,688571019650205760,10149555642796141884

%N Number of (n+1)X(4+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 4 of A233917

%H R. H. Hardin, <a href="/A233913/b233913.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

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

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

%e ..1..3..4..7..4....3..4..7..5..4....4..7..5..1..5....7..3..7..3..7

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 17 2013

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Last modified April 12 16:59 EDT 2024. Contains 371635 sequences. (Running on oeis4.)