A123719 An involution of nonnegative integers: signature permutation of Catalan automorphism which is obtained with recursion schema RIBS from automorphism *A085161

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

Offset

0,3

Comments

Recursion schema RIBS is defined in A122200. Number of fixed points in range [A014137(n-1)..A014138(n-1)] of this permutation is given by INVERT transform of A001405, appropriately shifted.

Links

Table of n, a(n) for n=0..71.

Index entries for signature-permutations of Catalan automorphisms

Prog

(Scheme function, constructive implementation of this automorphism acting on S-expressions:) (define *A123719 (RIBS *A085161))

Crossrefs

a(n) = A085160(A085163(n)). A085163(n) = A085159(a(n)).

Sequence in context: A275156 A188459 A146295 * A113221 A113219 A179978

Adjacent sequences: A123716 A123717 A123718 * A123720 A123721 A123722

Keyword

nonn

Author

Antti Karttunen, Oct 11 2006

Status

approved