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A091028 Alternating row sums of array A090440 (generalized Stirling2 array (4,3)). 2
1, -1, -299, 40751, 5067841, -7323445921, -999631061099, 8071239253153439, 3226932423143680609, -35637793578511857426241, -56681720635442893862661899, 428341845237867375193339807439, 2249822227541602344980346463546081 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

FORMULA

a(n)=-sum(((-1)^k)*A090440(n, k), k=3..3*n), n>=1.

CROSSREFS

Cf. A070531 (row sums of A090440).

Sequence in context: A064908 A105990 A160484 * A181646 A014369 A096511

Adjacent sequences:  A091025 A091026 A091027 * A091029 A091030 A091031

KEYWORD

sign,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Dec 23 2003

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Last modified February 16 13:12 EST 2012. Contains 205909 sequences.