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%I #7 Oct 02 2025 23:47:48
%S 1,76,2052,29853,285850,2020979,11347520,53152348,215061366,771160264,
%T 2498566550,7425638816,20485423871,52965100001,129352191161,
%U 300342814211,666626536184,1420917041309,2919995169996,5804856592815
%N Number of 5X5X5 triangular nonnegative integer arrays with all sums of an element and its neighbors <= n.
%K nonn
%O 0,2
%A _R. H. Hardin_, Oct 09 2009