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A235412 Number of (n+1)X(7+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise 0

%I #3 Jan 10 2014 06:53:42

%S 3249,62070,1623115,48788187,1561049902,48150637857,1547599117420,

%T 44262446103282,1328377496969266,34333220990606470,936029519726732770,

%U 21814340948244417848

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

%C Column 7 of A235413

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 10 2014

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Last modified April 24 03:06 EDT 2024. Contains 371918 sequences. (Running on oeis4.)