A123496 Signature permutation of a nonrecursive Catalan automorphism: row 65796 of table A089840.

0, 1, 3, 2, 7, 8, 4, 5, 6, 17, 18, 20, 21, 22, 9, 10, 11, 12, 13, 16, 19, 14, 15, 45, 46, 48, 49, 50, 54, 55, 57, 58, 59, 61, 62, 63, 64, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 44, 47, 53, 56, 60, 42, 51, 37, 38, 43, 52, 39, 40, 41, 129, 130, 132, 133, 134

Offset

0,3

Links

Table of n, a(n) for n=0..69.

A. Karttunen, Prolog-program which illustrates the construction of this and other similar nonrecursive Catalan automorphisms.

Index entries for signature-permutations of Catalan automorphisms

Prog

(Scheme function, destructive implementation of this automorphism acting on S-expressions:) (define (*A123496! s) (cond ((null? s) s) ((and (pair? (car s)) (pair? (caar s))) (*A074680! s) (*A069770! s)) (else (*A074680! s))) s)

Crossrefs

Inverse: A123495. a(n) = A069770(A082352(n)). Row 65796 of A089840. Used to construct automorphism *A082358. Cf. A069770 and A074680.

Sequence in context: A208657 A329940 A074680 * A130370 A072090 A130365

Adjacent sequences: A123493 A123494 A123495 * A123497 A123498 A123499

Keyword

nonn

Author

Antti Karttunen, Oct 11 2006

Status

approved