OFFSET
0,3
COMMENTS
This Catalan bijection rotates by "half step" the interpretations (pp)-(rr) of Stanley, using the "descending slope" mapping illustrated in A086431.
LINKS
A. Karttunen, Gatomorphisms (With the complete Scheme source)
CROSSREFS
Inverse: A086428. a(n) = A086431(A086428(A086431(n))) = A057164(A085173(A057164(n))) = A086425(A057501(A086426(n))). Occurs in A073200. Cf. also A086429 (whole step rotate).
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jun 23 2003
STATUS
approved