OFFSET
0,2
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..5000
Index entries for linear recurrences with constant coefficients, signature (0,3,0,-2).
FORMULA
MATHEMATICA
LinearRecurrence[{0, 3, 0, -2}, {1, 2, 5, 10}, 50] (* G. C. Greubel, Jul 09 2017 *)
PROG
(PARI) x='x+O('x^50); Vec((1+2*x)*(1+2*x^2)/((1-x)*(1+x)*(1-2*x^2))) \\ G. C. Greubel, Jul 09 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Philippe Deléham, Apr 23 2013
STATUS
approved