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%I #3 Mar 30 2012 18:36:04
%S 2,18,72,450,1250,4050,16200,52488,56448,64800,71442,101250,198450,
%T 235298,285768,328050,405000,793800,1036800,1312200,1620000,1786050,
%U 3175200,4572288,4961250,5248800
%N Even refactorable numbers n such that the number r of odd divisors and the number s of even divisors are both odd divisors of n and n is the first number for which the triple (r,s,t) occurs, where t is the number of divisors of n.
%C Note that s is necessarily a multiple of r.
%e a(2)=18 since r=3, s=3 and r+s=6.
%Y Cf. A033950, A049439. A057265.
%K nonn
%O 1,1
%A _Walter Kehowski_, Jun 25 2006
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