A081150 - OEIS

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A081150

Number of even cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506.

0, 0, 1, 1, 3, 6, 18, 37, 95, 212, 528, 1226, 2936, 6822, 16212, 38081, 90717, 215414, 516358 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,5`
	COMMENTS	`For the convenience of the range notation above, we define A014137(-1) and A014138(-1) as zero.`
	LINKS	`Counted with the help of this C-program`
	CROSSREFS	`a(n) = A081157(n)+A081160(n)+A081162(n) = A057507(n)-A081148(n). Bisections: A081151, A081152.` `Sequence in context: A034457 A026532 A160505 * A181037 A007990 A197050` `Adjacent sequences: A081147 A081148 A081149 * A081151 A081152 A081153`
	KEYWORD	`nonn`
	AUTHOR	`Wouter Meeussen (wouter.meeussen(AT)pandora.be) & Antti Karttunen (Firstname.Surname(AT)iki.fi) Mar 10 2003`

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Last modified February 15 09:09 EST 2012. Contains 205746 sequences.