A146300 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A146300

Number of n X n arrays of squares of integers summing to 9 with every element equal to at least one neighbor.

%I #5 Jun 16 2015 14:16:30

%S 0,1,1640,123744,1546356,9282128,37896264,121782952,331901924,

%T 801191922,1761200680,3592793804,6894127812,12569395174

%N Number of n X n arrays of squares of integers summing to 9 with every element equal to at least one neighbor.

%K nonn

%O 2,3

%A _R. H. Hardin_, Apr 14 2009