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%I A200919 #35 Aug 28 2013 06:46:13
%S A200919 0,0,0,1,3,5,9,13,19,25,34
%N A200919 Number of crossings on periodic braids with n strands such that all strands meet.
%H A200919 Duraid Madina, <a href="/A200919/a200919_1.txt">Illustration of initial terms a(1) .. a(7)</a>
%H A200919 N. J. A. Sloane, <a href="/A200919/a200919.pdf">Illustration for a(6) = 5</a>
%K A200919 nonn,hard,nice,more
%O A200919 1,5
%A A200919 _Duraid Madina_, Nov 24 2011
%E A200919 a(11) added by _Duraid Madina_, Oct 03 2012
%E A200919 a(7) corrected by _Duraid Madina_, Dec 11 2012

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