OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (32,-256).
FORMULA
G.f.: (1+16*x)/(1-16*x)^2.
Sum_{n>=0} 1/a(n) = 2*log(5/3).
Sum_{n>=0} (-1)^n/a(n) = 4 * arctan(1/4). - Amiram Eldar, Jul 12 2020
E.g.f.: exp(16*x)*(1 + 32*x). - Stefano Spezia, May 09 2023
PROG
(PARI) a(n)=(2*n+1)*16^n
(Magma) [(2*n+1)*16^n: n in [0..20]]; // Vincenzo Librandi, Jun 08 2011
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Jaume Oliver Lafont, Sep 13 2009
STATUS
approved