Search: id:A071874
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%I A071874
%S A071874 6,2,8,5,1,7,3,0,6,2,9,5,1,7,4,0,6,3,9,5,1,8,4,0,7,3,9,5,2,8,4,1,7,3,9,
%T A071874 6,2,8,5,1,7,3,0,6,2,9,5,1,7,4,0,6,3,9,5,1,8,4,0,7,3,9,5,2,8,4,1,7,3,9,
%U A071874 6,2,8,5,1,7,3,0,6,2,9,5,1,7,4,0,6,3,9,5,1,8,4,0,7,3,9,5,2,8
%N A071874 Decimal expansion of the seventh (of 10) decimal selvage number; the 
               n-th digit of a decimal selvage number, x, is equal to the tenths 
               digit of n*x. The seventh selvage number is equal to the complement 
               of the fourth selvage number: s_7 = 1 - s_4.
%C A071874 The selvage number, x = sum{k=1..inf} a(k)/10^k, is a normal number, 
               but it is not known whether or not x is irrational. Is this sequence 
               periodic?
%H A071874 MathWorld, <a href="http://mathworld.wolfram.com/EquidistributedSequence.html">
               Equidistributed Sequence</a>
%F A071874 a(n) = floor[10*(n*x)] (Mod 10), where x = sum{k=1..inf} a(k)/10^k. a(n) 
               = 9 - A071790(n).
%e A071874 a(7) = 3 since floor(10*(7*x)) (Mod 10) = 3, x=0.62851730629517406395184073952841739628517306295174...
%Y A071874 Cf. A071789, A071790, A071791, A071792, A071793.
%Y A071874 Sequence in context: A098686 A079718 A062771 this_sequence A011331 A155687 
               A021618
%Y A071874 Adjacent sequences: A071871 A071872 A071873 this_sequence A071875 A071876 
               A071877
%K A071874 cons,easy,nonn
%O A071874 0,1
%A A071874 Paul D. Hanna (pauldhanna(AT)juno.com), Jun 10 2002

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