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Positions of non-crossing fixed-point-free involutions encoded by A014486 (after reflection) in A055089. Permutation of A064640.
1

%I #8 Mar 20 2014 03:28:25

%S 0,1,7,23,127,143,415,659,719,5167,5183,5455,5699,5759,16687,16703,

%T 26815,36899,36959,28495,38579,40031,40319,368047,368063,368335,

%U 368579,368639,379567,379583,389695,399779,399839,391375,401459,402911,403199

%N Positions of non-crossing fixed-point-free involutions encoded by A014486 (after reflection) in A055089. Permutation of A064640.

%p map(PermRevLexRank,map(NonCrossingTransposRev, A014486)); NonCrossingTransposRev := n -> convert(NonCrossingTransposAux(deepreverse(binexp2pars(n)),1),'permlist',binwidth(n));

%Y Maple procedure deepreverse given in A057502, for others, follow A064638. Same sequence sorted: A064640.

%K nonn

%O 0,3

%A _Antti Karttunen_, Oct 15 2001