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A090439 Alternating row sums of array A090438 ((4,2)-Stirling2). 2
1, 5, 37, -887, -168919, -21607859, -2799384755, -337767590383, -11912361112367, 21032925955607701, 16703816669710968821, 10654267957172226744985, 6614425802684094455696377, 4120103872599589439389105373 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

FORMULA

a(n)= sum(((-1)^k)*A090438(n, k), k=2..2*n), n>=1. a(0) := 1 may be added

CROSSREFS

Sequence in context: A180275 A003213 A166851 * A189409 A089795 A081971

Adjacent sequences:  A090436 A090437 A090438 * A090440 A090441 A090442

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 14 18:47 EST 2012. Contains 205663 sequences.