%I #3 Apr 02 2016 20:28:33
%S 0,0,77,39237,49235880,209021374705,3081891326050173,
%T 151686712380427499712
%N Number of nXnXn triangular 0..7 arrays with new values introduced in sequential zero-upwards order and exactly one inverted 2x2x2 triangle having values all different.
%C Column 7 of A271246.
%e Some solutions for n=4
%e .....0........0........0........0........0........0........0........0
%e ....1.1......0.0......1.2......1.2......0.0......1.2......1.2......1.2
%e ...2.0.3....1.0.1....1.1.3....1.3.1....1.2.3....3.2.0....3.1.0....3.4.4
%e ..0.4.0.4..2.0.2.3..4.2.2.4..4.1.3.5..3.2.4.4..2.2.4.3..4.2.0.1..1.4.2.0
%Y Cf. A271246.
%K nonn
%O 1,3
%A _R. H. Hardin_, Apr 02 2016
|