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A140962 Negative values of the Inverse binomial transform of A045883. 2
0, -1, -1, -3, -1, -7, 3, -19, 23, -63, 107, -235, 447, -919, 1811, -3651, 7271, -14575, 29115, -58267, 116495, -233031, 466019, -932083, 1864119, -3728287, 7456523, -14913099, 29826143, -59652343, 119304627, -238609315, 477218567, -954437199 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

The inverse binomial transform of A045883 is 0,1,1,3,1,7,...

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

FORMULA

a(n+1) - a(n) = (-1)^(n+1)*A078008(n).

a(n+1) - a(n) = 2*(-1)^n*A001045(n-1), n > 0.

a(n) = 3*a(n-2) - 2*a(n-3).

a(n) = -1/9 - (2/3)*n + (1/9)*(-2)^n, with n >= 0. - Paolo P. Lava, Aug 04 2008

G.f.: -x(1+x)/((1+2x)(1-x)^2). - R. J. Mathar, Nov 11 2008

PROG

(MAGMA) [-(1/9)-(2/3)*n+(1/9)*(-2)^n: n in [0..40]]; // Vincenzo Librandi, Aug 08 2011

CROSSREFS

Sequence in context: A316742 A189050 A095868 * A013602 A328464 A323956

Adjacent sequences:  A140959 A140960 A140961 * A140963 A140964 A140965

KEYWORD

sign

AUTHOR

Paul Curtz, Jul 27 2008

EXTENSIONS

Edited and extended by R. J. Mathar, Nov 11 2008

STATUS

approved

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Last modified April 19 13:00 EDT 2021. Contains 343114 sequences. (Running on oeis4.)