Search: id:A100586
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%I A100586
%S A100586 3,4,5,6,7,9,11,14,17,21,26,32,40,50,62,77,96,120,150,187,234,292,
%T A100586 365,456,570,712,890,1112,1390,1737,2171,2714,3392,4240,5300,6625,
%U A100586 8281,10351,12939,16174,20217,25271,31589,39486,49357,61696,77120
%N A100586 Write down the numbers from 3 to infinity. Take next number, M say, that 
               has not been crossed off. Counting through the numbers that have 
               not yet been crossed off after that M, cross off every 5-th term. 
               Repeat, always crossing off every 5-th term of those that remain. 
               The numbers that are left form the sequence.
%D A100586 "Sieves", Popular Computing (Calabasas, CA), Vol. 2 (No. 13, Apr 1974), 
               pp. 6-7; sieve #6 (K=5).
%H A100586 <a href="Sindx_Si.html#sieve">Index entries for sequences generated by 
               sieves</a>
%t A100586 t = Range[3, 80000]; r = {}; While[Length[t] > 0, AppendTo[r, First[t]]; 
               t = Drop[t, {1, -1, 5}];]; r - from Ray Chandler (rayjchandler(AT)sbcglobal.net), 
               Dec 02 2004
%Y A100586 Cf. A003309, A003310, A100464, A100562, A003312, A003311, A052548, A100585.
%Y A100586 Sequence in context: A081692 A161346 A096515 this_sequence A139372 A128659 
               A022555
%Y A100586 Adjacent sequences: A100583 A100584 A100585 this_sequence A100587 A100588 
               A100589
%K A100586 nonn
%O A100586 1,1
%A A100586 N. J. A. Sloane (njas(AT)research.att.com), Dec 01 2004

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