A064639 Positions of non-crossing fixed-point-free involutions encoded by A014486 (after reflection) in A055089. Permutation of A064640.

0, 1, 7, 23, 127, 143, 415, 659, 719, 5167, 5183, 5455, 5699, 5759, 16687, 16703, 26815, 36899, 36959, 28495, 38579, 40031, 40319, 368047, 368063, 368335, 368579, 368639, 379567, 379583, 389695, 399779, 399839, 391375, 401459, 402911, 403199

Offset: 0

Author

Antti Karttunen, Oct 15 2001

Keywords

• nonn

Crossrefs

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

Programs

Maple

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