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Lengths of the loop of the sequences "Sum of last n digits" beginning with (n-1) zeros followed by digit 2.
0

%I #4 Mar 31 2012 10:30:58

%S 1,8,10,50,171,39,461,78,12203,312,318880,2184,57725,5804,1401,3251

%N Lengths of the loop of the sequences "Sum of last n digits" beginning with (n-1) zeros followed by digit 2.

%e a(4)=50 because the sum of last four *digits* of the sequence beginning with 0,0,0,2, (three zeros followed by a 2) enters in a loop whose length is 50 terms; so a(4)=50

%e a(5)=171 because "Sum of last five digits" beginning with 0,0,0,0,2 enters in a cycle of 171 terms.

%e Computed by Michael D Beeler.

%K base,easy,nonn

%O 1,2

%A _Alexandre Wajnberg_, Dec 17 2005