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A195799 Number of triangular nXnXn 0..2 arrays with all rows and diagonals having the same length having the same sum, with corners zero 0

%I

%S 1,1,3,27,105,1695,284427,11606931

%N Number of triangular nXnXn 0..2 arrays with all rows and diagonals having the same length having the same sum, with corners zero

%C Column 2 of A195805

%e Some solutions for n=5

%e ......0..........0..........0..........0..........0..........0..........0

%e .....1.0........1.0........1.1........1.2........0.0........1.2........2.0

%e ....1.0.1......2.0.2......2.2.2......0.1.0......2.0.2......0.1.0......1.1.1

%e ...0.0.0.1....0.0.0.1....1.2.2.1....2.1.1.1....0.0.0.0....2.1.1.1....0.1.1.2

%e ..0.1.1.0.0..0.1.2.0.0..0.1.2.1.0..0.1.0.2.0..0.0.2.0.0..0.1.0.2.0..0.2.1.0.0

%K nonn

%O 1,3

%A _R. H. Hardin_ Sep 23 2011

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Last modified June 27 16:27 EDT 2022. Contains 354896 sequences. (Running on oeis4.)