A126291 - OEIS

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A126291

Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A125985/A125986.

1, 1, 1, 2, 2, 5, 8, 11, 16, 23, 22, 32, 44, 54 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	COMMENTS	`The number of orbits (equivalence classes) to which Vaille's automorphism partitions the set of A000108(n) Dyck paths of semilength n. Note the non-monotone drop from a(9) to a(10).`
	CROSSREFS	`A126294(2n) = 2a(2n) for n>0.` `Sequence in context: A087910 A035570 A183928 A056224 A052527 A042982` `Adjacent sequences: A126288 A126289 A126290 * A126292 A126293 A126294`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), Jan 02 2007`

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Last modified February 14 13:08 EST 2012. Contains 205623 sequences.