%I #6 Mar 31 2012 10:26:16
%S 0,1,2,3,4,0,5,6,7,8,9,0,10,11,12,13,14,0,15,16,17,18,19,0,20,21,22,
%T 23,24,0,0,25,26,27,28,29,0,30,31,32,33,34,0,35,36,37,38,39,0,40,41,
%U 42,43,44,0,45,46,47,48,49,0,0,50,51,52,53,54,0,55,56,57,58,59,0,60,61,62,63
%N The number k such that each of the five factorials (5k+j)!, j=0..4, has exactly n trailing zeros in its base-10 representation; 0 if no such k exists.
%C Entries are zero if n is an element of A000966.
%C This traces 5 consecutive occurrences of n in A027868.
%Y Cf. A181579, A000142.
%K nonn,base
%O 0,3
%A _Lekraj Beedassy_, Nov 02 2010