%I A057543
%S A057543 1,1,2,3,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,
%T A057543 50,52
%N A057543 Maximum cycle length (orbit size) in the rotation permutation of 2n non-crossing 
               handshakes.
%C A057543 I.e. in permutations A057501 and A057502, the longest cycle among all 
               cycles between the A014138[n-2]+1th and A014138[n-1]th terms.
%F A057543 a(0)=1, a(1)=1, a(2)=2, a(3)=3, a(n)=2n
%Y A057543 Cf. A057542, A057544, A057545.
%Y A057543 Sequence in context: A008522 A028732 A028751 this_sequence A000059 A097053 
               A132327
%Y A057543 Adjacent sequences: A057540 A057541 A057542 this_sequence A057544 A057545 
               A057546
%K A057543 nonn
%O A057543 0,3
%A A057543 Antti Karttunen Sep 07 2000