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Number of nX4 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.
1

%I #4 Nov 22 2016 06:53:35

%S 155,19624,2116789,223202074,23450120081,2266913897519,

%T 191704868748703,14075699487073288,906324694033572285,

%U 51875514109305962403,2672849198449587976472,125300087299510807859757

%N Number of nX4 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.

%C Column 4 of A278435.

%H R. H. Hardin, <a href="/A278432/b278432.txt">Table of n, a(n) for n = 1..132</a>

%e Some solutions for n=2

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

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

%Y Cf. A278435.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 22 2016