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A238254 Number of (n+1)X(7+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise 0

%I

%S 3249,90225,7616082,640472606,64353451945,5017308028639,

%T 395035485087390,24520763755992781,1504227932142140703,

%U 75758809125961889230

%N Number of (n+1)X(7+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise

%C Column 7 of A238255

%e Some solutions for n=2

%e ..1..0..1..0..1..0..0..0....0..0..0..1..1..1..0..0....0..0..0..0..0..0..1..1

%e ..0..0..0..0..0..1..1..1....1..0..1..0..0..0..1..1....0..0..0..1..1..1..1..1

%e ..1..0..1..0..1..0..1..0....0..1..0..1..1..1..1..1....1..0..1..0..0..1..1..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 21 2014

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Last modified September 29 03:35 EDT 2022. Contains 357082 sequences. (Running on oeis4.)