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A159377 Number of n X n arrays of squares of integers with every (n-2) X (n-2) subblock summing to 9. 1

%I

%S 80,24734,15018432,3417742132,348819764864,13957776061203,

%T 290988318683360,3843118106335319,36290039874543840,

%U 265026530243707120,1579438944284211680,7981229569422064090,35179752294767789616

%N Number of n X n arrays of squares of integers with every (n-2) X (n-2) subblock summing to 9.

%H R. H. Hardin, <a href="/A159377/b159377.txt">Table of n, a(n) for n=4..22</a>

%K nonn

%O 4,1

%A _R. H. Hardin_, Apr 11 2009

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Last modified September 26 11:42 EDT 2022. Contains 356997 sequences. (Running on oeis4.)