Search: id:A120701
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%I A120701
%S A120701 2,6,9,12,15,18,21,25,28,31,34,37,40,43,47,50,53,56,59,62,65,69,72,75,
%T A120701 78,81,84,87,91,94,97,100,103,106,109,113,116,119,122,125,128,131,135,
%U A120701 138,141,144,147,150,153,157,160,163,166,169,172,175,179,182,185,188
%N A120701 Number of unit circles which fit touching a circle of radius n-1, i.e. 
               with their centers on a circle of radius n.
%C A120701 Coincides with A022844=Floor(n*Pi) except at n=1, 25510582, ... (sequence 
               A120702)
%F A120701 floor(Pi/asin(1/n))
%Y A120701 Cf. A022844, A002486, A001116.
%Y A120701 Sequence in context: A086939 A119720 A000134 this_sequence A112870 A086562 
               A083789
%Y A120701 Adjacent sequences: A120698 A120699 A120700 this_sequence A120702 A120703 
               A120704
%K A120701 easy,nonn
%O A120701 1,1
%A A120701 Martin Fuller (martin_n_fuller(AT)btinternet.com), Jun 28 2006

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