OFFSET
0,2
COMMENTS
Binomial transform of A083299.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..300
Index entries for linear recurrences with constant coefficients, signature (4,21)
FORMULA
a(n) = (4*7^n + (-3)^n)/5.
G.f.: (1+x)/((1-7*x)*(1+3*x)).
E.g.f.: (4*exp(7*x) + exp(-3*x))/5.
PROG
(Magma) [(4*7^n+(-3)^n)/5: n in [0..25]]; // Vincenzo Librandi, Jun 01 2011
(PARI) a(n)=(4*7^n+(-3)^n)/5 \\ Charles R Greathouse IV, Oct 07 2015
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Apr 24 2003
STATUS
approved