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%I #3 Mar 30 2012 18:50:44
%S 89,88,86,85,83,82,80,79,77,76,74,73,71,70,68,67,65,64,62,61,59,58,56,
%T 55,53,52,50,49,47,46,44,43,41,40,38,37,35,34,32,31,29,28,26,25,23,22,
%U 20,19,17,16,14,13,11,10,8,7,5,4,2,1
%N Number of equivalence classes of triangles having equal angles of integral degrees and smallest angle = n.
%C a(n) mod 3 > 0: a(n) = 90 - A001651(n-1).
%F a(n) = floor((180 - 3*n)/2) + 1.
%e a(58) = #{(58,58,64),(58,59,63),(58,60,62),(58,61,61)} = 4;
%e a(59) = #{(59,59,62),(59,60,61)} = 2;
%e a(60) = #{(60,60,60)} = 1, the last term.
%K nonn,fini,full
%O 1,1
%A _Reinhard Zumkeller_, Aug 06 2004
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