A135816 - OEIS

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A135816

Alternating row sums of triangle A135814 (number of coincidence-free m-tuple lists of length n).

1, -1, 1, -2, 2, 9, 231, -208, -903776, -143213213, 118835487821, 388585756132242, -521157743571990450, -72978076847525420725075, -1904341683955074815027626877, 1483881447421749524769255709488292, 1360468742213189927760243663613128043340 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	FORMULA	`a(n)=sum(A135814(n,m)*(-1)^m,m=0..n), n>=0.`
	CROSSREFS	`Cf. A135815 (row sums of A135814).` `Sequence in context: A204265 A081086 A019514 * A157341 A038036 A133631` `Adjacent sequences: A135813 A135814 A135815 * A135817 A135818 A135819`
	KEYWORD	`sign,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de) Jan 21 2008`

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Last modified February 14 14:07 EST 2012. Contains 205623 sequences.