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%I #3 Aug 24 2012 10:49:56
%S 0,1,3,4,5,9,15,16,21,22,23,72,105,112,117,118,119,336,615,672,705,
%T 712,717,718,719,1200,4095,4656,4935,4992,5025,5032,5037,5038,5039
%N Positive integers that can be expressed as the difference between a factorial and a double factorial.
%F n! - m!! being n! > m!!
%e 117 = 5! - 3!!
%e 4992 = 7! - 6!!
%Y Cf. A110903, A111300.
%K nonn
%O 1,3
%A _Paolo P. Lava_ and _Giorgio Balzarotti_, Apr 20 2006
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