Search: id:A071789
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%I A071789
%S A071789 1,2,3,4,6,7,8,9,1,2,3,4,6,7,8,9,0,2,3,4,5,7,8,9,0,2,3,4,5,7,8,9,0,1,3,
%T A071789 4,5,6,8,9,0,1,3,4,5,6,8,9,0,1,2,4,5,6,7,9,0,1,2,4,5,6,7,9,0,1,2,3,5,6,
%U A071789 7,8,0,1,2,3,5,6,7,8,0,1,2,3,4,6,7,8,9,1,2,3,4,6,7,8,9,0,2,3
%N A071789 Decimal expansion of the first (of 10) decimal selvage numbers; the n-th 
               digit of a decimal selvage number, x, is equal to the tenths digit 
               of n*x.
%C A071789 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?
%F A071789 a(n) = floor[10*(n*x)] (Mod 10), where x = sum{k=1..inf} a(k)/10^k.
%e A071789 a(7) = 8 since floor(10*(7*x)) = 8, x=.12346789123467890234578902345789013456890134568901...
%Y A071789 Sequence in context: A071652 A089884 A086163 this_sequence A131870 A004724 
               A099260
%Y A071789 Adjacent sequences: A071786 A071787 A071788 this_sequence A071790 A071791 
               A071792
%K A071789 cons,nice,nonn
%O A071789 0,2
%A A071789 Paul D. Hanna (pauldhanna(AT)juno.com), Jun 06 2002

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