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A195797 Number of triangular nXnXn 0..n arrays with all rows and diagonals having the same length having the same sum, with corners zero 1

%I

%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

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Last modified August 17 03:41 EDT 2022. Contains 356180 sequences. (Running on oeis4.)