%I #3 Mar 30 2012 18:50:37
%S 0,1,1,4,1,5,1,12,6,7,16,9,8,32,21,24,10,44,10,27,32,31,80,12,60,68,
%T 41,39,112,14,45,81,92,92,51,192,59,156,55,176,108,124,123,272,77,140,
%U 71,216,240,244,75,165,448,162,188,384,91,185,432,297,332,95,336
%N Arithmetic derivative of 7-smooth numbers.
%C a(n) = A003415(A002473(n)).
%K nonn
%O 1,4
%A _Reinhard Zumkeller_, Jul 15 2003
|