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A278853 Number of nX6 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes. 1

%I

%S 1,1486,118158,4950399,154090507,4026240722,92891826961,1935392159582,

%T 36831668321915,644951602341507,10454319538089429,157736949429737228,

%U 2227039251935175027,29569631792451694669,370951068728197563294

%N Number of nX6 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.

%C Column 6 of A278855.

%H R. H. Hardin, <a href="/A278853/b278853.txt">Table of n, a(n) for n = 1..153</a>

%e Some solutions for n=3

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

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

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

%Y Cf. A278855.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 29 2016

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Last modified June 22 21:29 EDT 2021. Contains 345393 sequences. (Running on oeis4.)