OFFSET
0,3
LINKS
Index entries for linear recurrences with constant coefficients, signature (0,13,12).
FORMULA
a(n) = (-1)^n*3^(n+2)/14 + 4^(n+2)/35 - (-1)^n/10. - R. J. Mathar, Jan 09 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alex Ratushnyak, Dec 28 2014
STATUS
approved