[seqfan] Re: Odd squarefree numbers
zak seidov
zakseidov at yahoo.com
Fri Sep 24 07:52:45 CEST 2010
Many thanks, Max and Maximilian!
Here's the draft of A175843.
Any suggestions/edits
(better personally to me,
not bothering the whole list)
will be greatly appreciated.
Zak
%I A175843
%S A175843 1,21,241,2463,24671,246745,2467401,24674017,246740209,2467401073,
%T A175843 24674011069,246740110021,2467401100859,24674011004865,246740110026451,
%U A175843 2467401100272455,24674011002722867
%N A175843 (10^n)th odd squarefree numbers.
%C A175843 a(10)-a(16) from Max Alexeev maxale at gmail.com>
%C A175843 a(n)/10^n at n->oo = (Pi/2)^2.
%C A175843 This follows from the formula given in A056911 :
%C A175843 A056911(n) = n * (3/2) * zeta(2) + O(n^(1/2)) = n * (3/2) * (pi^2 / 6) + O(n^(1/2)) (Maximilian Hassler maximilian.hasler at gmail.com)
%Y A175843 Cf. A056911.
%K A175843 nonn
%O A175843 0,2
%A A175843 Zak Seidov (zakseidov(AT)yahoo.com), Sep 24 2010
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