A278366 - OEIS

%I #4 Nov 19 2016 12:50:19

%S 0,0,59,1465,19047,194726,1734714,13506810,91496261,543067118,

%T 2862579656,13596395709,58966870090,236182156566,882025314222,

%U 3095734502639,10279759883927,32476397677376,98079088190039,284292946153409

%N Number of nX2 0..2 arrays with rows and columns in lexicographic nondecreasing order but with exactly three mistakes.

%C Column 2 of A278372.

%H R. H. Hardin, <a href="/A278366/b278366.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A278366/a278366.txt">Empirical polynomial of degree 35</a>

%F Empirical polynomial of degree 35 (see link above)

%e Some solutions for n=4

%e ..2..1. .1..0. .2..1. .2..2. .2..1. .2..0. .2..2. .2..1. .2..2. .1..0

%e ..1..0. .1..2. .2..2. .1..0. .1..1. .1..0. .2..0. .2..2. .2..1. .0..2

%e ..0..2. .1..0. .1..1. .0..1. .0..0. .0..0. .0..0. .0..2. .0..0. .2..1

%e ..1..2. .0..2. .1..0. .1..0. .2..2. .1..1. .2..1. .0..1. .2..1. .0..2

%Y Cf. A278372.

%K nonn

%O 1,3

%A _R. H. Hardin_, Nov 19 2016