A069766 - OEIS

%I #5 May 01 2014 02:46:54

%S 0,1,2,3,5,4,6,7,11,9,10,8,12,17,14,21,19,13,20,16,18,15,22,23,37,29,

%T 33,27,41,25,39,31,32,26,40,35,36,24,38,30,34,28,42,57,47,72,64,44,68,

%U 54,61,51,76,59,49,74,66,43,67,53,60,50,75,70,46,71,56,58,48,73,63,65

%N Self-inverse permutation of natural numbers induced by the automorphism RotateHandshakes180 (A069771) or xReflectHandshakes (A069772) acting on the symmetric parenthesizations encoded by A061855.

%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>

%Y Cf. A061855, A069771, A069772.

%K nonn

%O 0,3

%A _Antti Karttunen_, Apr 16 2002