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 A134139 Alternating row sums of triangle A049353 (S1p(5)). 1
 1, 4, 16, 44, -244, -7336, -112664, -1406336, -14058944, -66627136, 1879992896, 85070733824, 2359547577856, 54106723270144, 1055100890838016, 15611883969810944, 48348082318102016, -9055743653514520576, -521351156412528902144 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..19. FORMULA a(n)=sum(A049353(n,m)*(-1)^(m-1),m=1..n), n>=1. E.g.f.: 1-exp(-x*(2-x)*(2-2*x+x^2)/(4*(1-x)^4)). Cf. e.g.f. first column of A049353. CROSSREFS Cf. A049378 (row sums of A049353). Sequence in context: A217553 A225379 A359073 * A213501 A097125 A213480 Adjacent sequences: A134136 A134137 A134138 * A134140 A134141 A134142 KEYWORD sign,easy AUTHOR Wolfdieter Lang Oct 12 2007 STATUS approved

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Last modified October 3 06:34 EDT 2023. Contains 365842 sequences. (Running on oeis4.)