Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the
OEIS Foundation home page.
a(n) = A007980(n-1) * n.
Table of n, a(n) for n=1..44.
Index entries for linear recurrences with constant coefficients, signature (2,-1,2,-4,2,-1,2,-1).
G.f.: x*(2*x^5+2*x^4+6*x^3+5*x^2+2*x+1) / ((x-1)^4*(x^2+x+1)^2). - Colin Barker, Mar 31 2013
(Haskell) See A033291.
Sequence in context: A301005 A178571 A278211 * A109629 A112087 A166019
Adjacent sequences: A192733 A192734 A192735 * A192737 A192738 A192739
Reinhard Zumkeller, Jul 08 2011