OFFSET
0,2
COMMENTS
Binomial transform of A053524 (without leading zero).
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..300
Index entries for linear recurrences with constant coefficients, signature (6,7).
FORMULA
a(n) = (3*7^n+(-1)^n)/4.
G.f.: (1-x)/((1-7*x)*(1+x)).
E.g.f.: (3*exp(7*x)+exp(-x))/4
PROG
(Magma) [(3*7^n+(-1)^n)/4: n in [0..25]]; // Vincenzo Librandi, Jun 29 2011
(PARI) Vec((1-x)/((1-7*x)*(1+x)) + O(x^40)) \\ Andrew Howroyd, Feb 16 2018
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Apr 23 2003
STATUS
approved