A278732 - OEIS

%I #6 Jun 17 2022 14:54:20

%S 1128,712406,506031118,374757577056,268284486351027,

%T 183338866913973336,119979123054325787300,75059724220196821830976,

%U 44560888984275849849896791,24904255595102014593384961783

%N Number of n X 6 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.

%C Column 6 of A278734.

%H R. H. Hardin, <a href="/A278732/b278732.txt">Table of n, a(n) for n = 1..19</a>

%e Some solutions for n=1

%e ..1..0..0..0..0..1. .1..1..0..2..2..2. .0..3..3..3..3..0. .0..0..3..3..3..1

%Y Cf. A278734.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 27 2016