OFFSET
1,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (31,-255,225).
FORMULA
G.f.: x/((1 - x)*(1 - 15*x)^2). - Stefano Spezia, Mar 11 2020
PROG
(PARI) a(n) = (1+15^n*(14*n-1))/196; \\ Jinyuan Wang, Mar 11 2020
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved