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%I #12 Sep 25 2014 23:23:19
%S 2,28,285,2873,28795,288244,2883807,28846206,288514821,2885502969,
%T 28857521613,288593332699,2886069270370
%N Standard deviation (rounded) of composites below 10^n.
%C As with the primes in A091716, each succeeding term seems a close multiple of that preceding.
%C Exact values: a(8)=sqrt(1055690147582754761176900206278/1268700426680407), a(9)=sqrt(2343463734895394416636292841043365/28152824997414728), a(10)=sqrt(758560349177461014920842710257059832362/91106022529587615169). [From _Sean A. Irvine_, Apr 07 2010]
%C Exact values from _Sean A. Irvine_ are population standard deviations. - _Hiroaki Yamanouchi_, Sep 23 2014
%D John E. Freund, Modern elementary statistics, 5th ed. (Prentice-Hall, 1979), pp. 42-47
%e a(3) = 285 because this is the computed and rounded sample standard deviation of the composites below 10^3.
%Y Cf. A092802, A091716.
%K more,nonn
%O 1,1
%A _Enoch Haga_, Mar 06 2004
%E Corrected and extended by _Sean A. Irvine_, Apr 07 2010
%E a(8) corrected and a(11)-a(13) from _Hiroaki Yamanouchi_, Sep 23 2014
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