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A159402
Number of n X n arrays of squares of integers with every (n-1) X (n-1) subblock summing to 18.
1
78, 48248, 78006076, 80623650576, 59454961587150, 27119097659237820, 7125999523511887208, 1048541072549858010880, 89398941053870783184490, 4759738914307357587295200, 171123815205170591864878272, 4439957059433222868126771008, 87669075083324222734899105986
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OFFSET
3,1
LINKS
R. H. Hardin,
Table of n, a(n) for n=3..19
CROSSREFS
Sequence in context:
A383942
A126998
A299712
*
A093239
A299713
A064991
Adjacent sequences:
A159399
A159400
A159401
*
A159403
A159404
A159405
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Apr 11 2009
STATUS
approved
