id:A081155 - OEIS Search Results

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Number of odd cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506, with fixed-points of both A057163 and A057164.

+0
4

1, 1, 0, 1, 0, 2, 0, 3, 0, 6, 0, 12, 0, 20, 0, 59, 0, 120, 0 (list; graph; listen)

	OFFSET	`0,6`
	COMMENT	`See comment at A080973. Because A057163 can fix only binary trees of odd size, the even-indexed terms are all 0 after n>0.`
	CROSSREFS	`a(n) = A081148(n)-A081153(n). Bisection: A081156.` `Sequence in context: A117175 A090482 A082857 this_sequence A130628 A076563 A089780` `Adjacent sequences: A081152 A081153 A081154 this_sequence A081156 A081157 A081158`
	KEYWORD	`nonn`
	AUTHOR	`Wouter Meeussen (wouter.meeussen(AT)pandora.be) and Antti Karttunen (Firstname.Surname(AT)iki.fi) Mar 10 2003`

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Last modified December 16 13:01 EST 2009. Contains 170825 sequences.