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%I #5 Mar 31 2012 12:36:16
%S 158,550,1236,2250,3596,5250,7224,9496,12044,14860,17948,21266,24852,
%T 28634,32604,36780,41168,45716,50440,55324,60384,65612,71000,76532,
%U 82240,88116,94136,100300,106624,113100,119744,126532,133472,140560,147792
%N Number of right triangles on a (n+1)X9 grid
%C Column 8 of A189814
%H R. H. Hardin, <a href="/A189813/b189813.txt">Table of n, a(n) for n = 1..200</a>
%F Empirical: a(n) = 72*n^2 + 2344*n - 23112 for n>63
%e Some solutions for n=3
%e ..2..8....2..2....0..6....0..6....3..0....1..3....0..2....0..8....3..5....3..8
%e ..2..1....2..7....0..5....0..4....0..0....0..3....0..1....0..7....1..1....0..8
%e ..3..8....3..2....2..6....1..6....3..8....1..7....1..2....3..8....1..6....3..7
%K nonn
%O 1,1
%A _R. H. Hardin_ Apr 28 2011
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