A131173 Signature permutation of a self-inverse Catalan automorphism: row 7 of A122285 and A122286.

0, 1, 2, 3, 4, 5, 6, 8, 7, 9, 10, 11, 12, 13, 14, 15, 19, 21, 22, 16, 20, 17, 18, 23, 24, 25, 27, 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 51, 52, 56, 58, 59, 60, 62, 63, 64, 42, 43, 53, 57, 61, 44, 54, 45, 46, 47, 55, 48, 49, 50, 65, 66, 67, 68, 69, 70, 71

Offset

0,3

Comments

Derived from automorphism *A122282 with recursion scheme SPINE or ENIPS.

Links

A. Karttunen, Table of n, a(n) for n = 0..2055

Index entries for signature-permutations of Catalan automorphisms

Prog

(Destructive Scheme implementation of this automorphism, which acts on S-expressions, i.e. list-structures:)
(define (*A131173! s) (cond ((pair? s) (*A069770! (car s)) (if (pair? (cdr s)) (*A131173! (cddr s))))) s)

Crossrefs

Sequence in context: A089854 A154453 A154454 * A073286 A122312 A130985

Adjacent sequences: A131170 A131171 A131172 * A131174 A131175 A131176

Keyword

nonn

Author

Antti Karttunen, Jun 20 2007

Status

approved