OFFSET
0,2
COMMENTS
Hankel transform is := 1,-48,0,0,0,0,0,0,0,...
LINKS
Colin Barker, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (2).
FORMULA
a(0)=1, a(n) = 2^(n+2) for n>0.
a(n) = A132479(n), n>1. - R. J. Mathar, Nov 02 2008
G.f.: (1+6*x) / (1-2*x). - Colin Barker, Mar 17 2016
MATHEMATICA
Join[{1}, 2^Range[3, 40]] (* Harvey P. Dale, Feb 28 2016 *)
PROG
(PARI) Vec((1+6*x)/(1-2*x) + O(x^50)) \\ Colin Barker, Mar 17 2016
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Philippe Deléham, Oct 31 2008
EXTENSIONS
Corrected and extended by Harvey P. Dale, Feb 28 2016
STATUS
approved