|
%I #3 Mar 29 2016 07:43:46
%S 0,40,896,15116,232432,3441072,50108414,724727082,10461499634,
%T 151103449566,2186779416368,31731721875678,461837305110082,
%U 6742912667242640,98757904224890770,1450886824492563414
%N Number of nXnXn triangular 0..4 arrays with some element less than a w, nw or ne neighbor exactly once.
%C Column 4 of A271034.
%e Some solutions for n=4
%e .....0........2........0........0........0........1........2........0
%e ....0.0......2.4......0.1......0.0......0.2......1.4......0.2......0.0
%e ...0.2.3....0.4.4....1.1.1....1.1.2....3.3.3....1.2.4....0.2.4....2.3.0
%e ..2.4.3.4..0.4.4.4..2.3.1.3..3.1.3.4..4.3.3.3..2.3.4.4..0.4.4.4..2.3.4.4
%Y Cf. A271034.
%K nonn
%O 1,2
%A _R. H. Hardin_, Mar 29 2016
| 