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A064639 Positions of non-crossing fixed-point-free involutions encoded by A014486 (after reflection) in A055089. Permutation of A064640. 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..36.

MAPLE

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

CROSSREFS

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

Sequence in context: A267926 A228698 A064640 * A064638 A082021 A227254

Adjacent sequences:  A064636 A064637 A064638 * A064640 A064641 A064642

KEYWORD

nonn

AUTHOR

Antti Karttunen, Oct 15 2001

STATUS

approved

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Last modified September 17 09:05 EDT 2019. Contains 327128 sequences. (Running on oeis4.)