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A091758
Alternating row sums of array A092077 ((8,2)-Stirling2).
1
1, 41, 5993, 1911281, 1070544561, 931648129241, 1164230224629081, 1977455909783346273, 4384042247054153832161, 12298460017360155919009801, 42594621493418383255115778761, 178534870708446720311905067877201, 890813416549297707507952795640859793
OFFSET
1,2
COMMENTS
The first negative member is the 680 digit number a(138)=-2266379480...2912329207.
FORMULA
a(n)= sum( A092077(n, k)*(-1)^k, k=2..2*n), n>=1.
CROSSREFS
Cf. A091757 (row sums of A092077).
Sequence in context: A159992 A101830 A223130 * A208255 A221325 A104301
KEYWORD
sign,easy
AUTHOR
Wolfdieter Lang, Feb 27 2004
STATUS
approved