A159390 Number of n X n arrays of squares of integers with every (n-1) X (n-1) subblock summing to 13.

40, 17290, 10876248, 3744973114, 813350278400, 99052072571820, 6469138147152688, 243231208764113056, 5871649032381652712, 99740686767840133850, 1277236022721642074168, 12978098074693925323078, 108765022206675043804480, 774524573925760792966832, 4797281936443026194209400

Offset

3,1

Links

R. H. Hardin, Table of n, a(n) for n=3..23

Crossrefs

Sequence in context: A279578 A159680 A240628 * A376744 A204682 A205158

Adjacent sequences: A159387 A159388 A159389 * A159391 A159392 A159393

Keyword

nonn

Author

R. H. Hardin, Apr 11 2009

Status

approved