|
%I #5 Nov 28 2016 11:02:03
%S 0,44,1713,34348,468496,4888659,41698446,303361302,1938464178,
%T 11113364813,58083296635,280168918756,1259424247108,5317482568472,
%U 21222955187222,80498197428443,291472386647409,1011352733367759
%N Number of nX2 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.
%C Column 2 of A278798.
%H R. H. Hardin, <a href="/A278793/b278793.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A278793/a278793.txt">Empirical polynomial of degree 44</a>
%F Empirical polynomial of degree 44 (see link above)
%e Some solutions for n=4
%e ..1..3. .1..3. .3..1. .0..3. .1..3. .3..0. .3..2. .0..2. .3..0. .3..2
%e ..2..1. .1..0. .1..1. .2..0. .0..1. .0..3. .1..2. .0..2. .2..0. .2..2
%e ..0..1. .1..2. .0..2. .3..1. .3..0. .3..2. .1..3. .3..0. .3..1. .3..3
%e ..3..0. .3..1. .1..2. .1..0. .3..1. .0..0. .0..1. .1..0. .0..2. .2..0
%Y Cf. A278798.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 28 2016
| 