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A069889
Self-inverse permutation of natural numbers induced by the automorphism RotateHandshakes_et_DeepReverse! acting on the parenthesizations encoded by A014486.
5
0, 1, 3, 2, 7, 8, 6, 4, 5, 17, 20, 18, 21, 22, 16, 19, 14, 9, 11, 15, 10, 12, 13, 45, 54, 48, 57, 61, 46, 55, 49, 58, 62, 50, 59, 63, 64, 44, 53, 47, 56, 60, 42, 51, 37, 23, 28, 39, 25, 30, 33, 43, 52, 38, 24, 29, 40, 26, 31, 34, 41, 27, 32, 35, 36, 129, 157, 138, 166, 180
OFFSET
0,3
COMMENTS
This automorphism reflects non-crossing handshakes (the interpretation n of Stanley's exercise 19) over the diagonal that goes through corner at "11 o'clock".
LINKS
CROSSREFS
Composition of A057501 and A057164, i.e. A069888(n) = A057164(A057501(n)). Cf. also A069888.
Sequence in context: A154456 A122328 A082346 * A154451 A131000 A122351
KEYWORD
nonn
AUTHOR
Antti Karttunen, Apr 16 2002
STATUS
approved