OFFSET
0,3
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..1000
Ângela Mestre, José Agapito, Square Matrices Generated by Sequences of Riordan Arrays, J. Int. Seq., Vol. 22 (2019), Article 19.8.4.
Index entries for linear recurrences with constant coefficients, signature (2, -1).
FORMULA
a(n) = -A060747(n).
a(n) = 2*a(n-1) - a(n-2), a(0)= 1, a(1)= -1.
G.f.: (1-3x)/(1-x)^2.
a(n) = Sum_{k, 0<=k<=n} A112555(n,k)*(-2)^(n-k).
E.g.f.: (1-2*x)*exp(x). - G. C. Greubel, Apr 07 2016
MATHEMATICA
Table[1 - 2 n, {n, 0, 100}] (* G. C. Greubel, Apr 07 2016 *)
PROG
(PARI) x='x+O('x^99); Vec((1-3*x)/(1-x)^2) \\ Altug Alkan, Apr 07 2016
CROSSREFS
KEYWORD
easy,sign
AUTHOR
Philippe Deléham, Sep 26 2009
STATUS
approved