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%I #5 Mar 31 2012 12:36:24
%S 1,1,4,125,5052,5828215,479534519840
%N Number of triangular nXnXn 0..n arrays with all rows and diagonals having the same length having the same sum, with corners zero
%C Diagonal of A195805
%e Some solutions for n=5
%e ......0..........0..........0..........0..........0..........0..........0
%e .....0.1........5.0........5.0........4.3........5.0........1.0........3.2
%e ....4.4.3......5.0.5......3.0.5......4.0.3......3.0.4......3.1.3......5.1.5
%e ...1.2.3.1....0.0.0.5....0.4.2.3....2.1.2.4....0.2.1.4....0.1.1.1....1.4.4.2
%e ..0.0.5.0.0..0.5.5.0.0..0.5.1.2.0..0.5.2.3.0..0.5.2.1.0..0.1.3.0.0..0.4.2.3.0
%K nonn
%O 1,3
%A _R. H. Hardin_ Sep 23 2011