A140307 - OEIS

A140307

Number of n X n binary matrices containing at most four 1's in any 3 X 3 sub-block.

%I #4 Mar 31 2012 12:35:07

%S 1,2,16,256,15982,3082378,1476568000,2280441045555,10599616558936358,

%T 140380164790852384033

%N Number of n X n binary matrices containing at most four 1's in any 3 X 3 sub-block.

%Y Cf. A139810.

%K nonn

%O 0,2

%A _R. H. Hardin_, May 27 2008