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%I #3 Mar 31 2012 12:35:35
%S 1,13,455,23464,11477240,20485423871,106493297313816
%N Number of nXnXn triangular nonnegative integer arrays with all sums of an element and its neighbors <= 12
%K nonn
%O 0,2
%A _R. H. Hardin_ Oct 09 2009