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A135816 Alternating row sums of triangle A135814 (number of coincidence-free m-tuple lists of length n). 1
1, -1, 1, -2, 2, 9, 231, -208, -903776, -143213213, 118835487821, 388585756132242, -521157743571990450, -72978076847525420725075, -1904341683955074815027626877, 1483881447421749524769255709488292, 1360468742213189927760243663613128043340 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..16.

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 A297793

Adjacent sequences:  A135813 A135814 A135815 * A135817 A135818 A135819

KEYWORD

sign,easy

AUTHOR

Wolfdieter Lang Jan 21 2008

STATUS

approved

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Last modified February 20 08:44 EST 2019. Contains 320325 sequences. (Running on oeis4.)