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A091751 Alternating row sums of array A091747 (generalized Stirling2 array (7,2)). 1
1, 29, 2899, 625381, 235735025, 137662456849, 115219635641083, 130892567494940777, 193870813073375001313, 362981045220391075931461, 838251579579056365127865923, 2340586894706172958195272669517, 7772441664087128321443493161452817 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
The first negative term is the 159 digit number a(43)=-2116278545846...33655549.
LINKS
FORMULA
a(n)=sum(A091747(n, k)*(-1)^k, k=2..2*n), n>=1.
CROSSREFS
Cf. A091749 (row sums of A091747).
Sequence in context: A281440 A171720 A305138 * A144233 A125074 A033519
KEYWORD
sign,easy
AUTHOR
Wolfdieter Lang, Feb 27 2004
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)