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 A057164 Self-inverse permutation of natural numbers induced by reflections of the rooted plane trees and mountain ranges encoded by A014486. 79
 0, 1, 2, 3, 4, 6, 5, 7, 8, 9, 14, 11, 16, 19, 10, 15, 12, 17, 20, 13, 18, 21, 22, 23, 37, 28, 42, 51, 25, 39, 30, 44, 53, 33, 47, 56, 60, 24, 38, 29, 43, 52, 26, 40, 31, 45, 54, 34, 48, 57, 61, 27, 41, 32, 46, 55, 35, 49, 58, 62, 36, 50, 59, 63, 64, 65, 107, 79, 121, 149, 70 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS CatalanRankGlobal given in A057117 and the other Maple procedures in A056539. Composition with A057163 gives Donaghey's Map M (A057505/A057506). LINKS Rémy Sigrist, Table of n, a(n) for n = 0..6917 (first 197 terms from Indranil Ghosh) Antti Karttunen, Gatomorphisms (includes the complete Scheme program for computing this sequence). Antti Karttunen, C program which implements this Catalan bijection. Indranil Ghosh, Python program for computing the sequence. Rémy Sigrist, PARI program. Index entries for signature-permutations induced by Catalan automorphisms FORMULA a(n) = A080300(A036044(A014486(n))) = A080300(A056539(A014486(n))). EXAMPLE a(10)=14 and a(14)=10, A014486[10] = 172 (10101100 in binary), A014486[14] = 202 (11001010 in binary) and these encode the following mountain ranges (and the corresponding rooted plane trees), which are reflections of each other: ...../\___________/\ /\/\/__\_________/__\/\/\ ... ...../...........\ ..\|/.............\|/ MAPLE a(n) = CatalanRankGlobal(runcounts2binexp(reverse(binexp2runcounts(A014486[n])))) # i.e., reverse and complement the totally balanced binary sequences PROG (Scheme function implementing this automorphism on list-structures:) (define (DeepRev lista) (cond ((not (pair? lista)) lista) ((null? (cdr lista)) (cons (DeepRev (car lista)) (list))) (else (append (DeepRev (cdr lista)) (DeepRev (cons (car lista) (list))))))) (PARI) See Links section. CROSSREFS A057123(A057163(n)) = A057164(A057123(n)) for all n. Also the car/cdr-flipped conjugate of A069787, i.e., A057164(n) = A057163(A069787(A057163(n))). Fixed terms are given by A061856. Cf. also A057508, A069772. Row 2 of tables A122287 and A122288. Sequence in context: A073285 A057512 A057508 * A085175 A130111 A104182 Adjacent sequences: A057161 A057162 A057163 * A057165 A057166 A057167 KEYWORD nonn AUTHOR Antti Karttunen, Aug 18 2000 STATUS approved

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Last modified August 3 23:57 EDT 2024. Contains 374905 sequences. (Running on oeis4.)