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%I #3 Mar 31 2012 10:30:58
%S 1,8,4,50,171,39,461,78,12203,312,318880,2184,57725,5804,1401,3251
%N Lengths of the loop of the sequences "Sum of last n digits" beginning with (n-1) zeros followed by digit 4.
%e a(5)=171 because the sum of last five *digits* of the sequence beginning with 0,0,0,0,4, (four zeros followed by a 4) enters in a loop whose length is 171 terms; so a(5)=171
%e a(6)=39 because "Sum of last six digits" beginning with 0,0,0,0,0,4 enters in a cycle of 39 terms.
%e Computed by Michael D Beeler.
%Y Cf. A112395.
%K base,easy,nonn
%O 1,2
%A _Alexandre Wajnberg_, Dec 17 2005