A278851 - OEIS

%I #4 Nov 29 2016 10:25:37

%S 0,25,1348,30772,449677,4950399,44571591,344302564,2353207764,

%T 14536481606,82424606803,434031398793,2141802790067,9975624305928,

%U 44106878749240,186005545087412,751100286992318,2913746151722174

%N Number of nX4 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.

%C Column 4 of A278855.

%H R. H. Hardin, <a href="/A278851/b278851.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A278851/a278851.txt">Empirical polynomial of degree 52</a>

%F Empirical polynomial of degree 52 (see link above)

%e Some solutions for n=4

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

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

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

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

%Y Cf. A278855.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 29 2016