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A278852 Number of nX5 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes. 1

%I #4 Nov 29 2016 10:26:46

%S 0,239,15066,449677,9317846,154090507,2167109763,26799758534,

%T 297417275848,3004658410735,27940725989130,241350612592135,

%U 1951440294582041,14865802497447044,107290958051308517

%N Number of nX5 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.

%C Column 5 of A278855.

%H R. H. Hardin, <a href="/A278852/b278852.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A278852/a278852.txt">Empirical polynomial of degree 101</a>

%F Empirical polynomial of degree 101 (see link above)

%e Some solutions for n=3

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

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

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

%Y Cf. A278855.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 29 2016

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Last modified August 11 17:45 EDT 2024. Contains 375073 sequences. (Running on oeis4.)