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A159369 Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 7 1

%I #5 Dec 18 2015 18:17:19

%S 12,19028,2940768,318767900,10588659260,167797693208,1648419588640,

%T 11596123050584,63725276919564,289494934894140,1130345502845984,

%U 3900985410505140,12149739981772028,34697504891442080,91996839455813600

%N Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 7

%H R. H. Hardin, <a href="/A159369/b159369.txt">Table of n, a(n) for n=4..24</a>

%K nonn

%O 4,1

%A _R. H. Hardin_ Apr 11 2009

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Last modified July 21 08:46 EDT 2024. Contains 374464 sequences. (Running on oeis4.)