OFFSET
0,1
COMMENTS
LINKS
Index entries for linear recurrences with constant coefficients, signature (11,-19,9).
FORMULA
a(n) = 11*a(n-1) - 19*a(n-2) + 9*a(n-3) for n >= 3.
MAPLE
f:= gfun:-rectoproc({a(n)=11*a(n-1)-19*a(n-2)+9*a(n-3), a(0)=2, a(1)=16, a(2)=126}, a(n), remember): map(f, [$0..21]);
MATHEMATICA
CoefficientList[Series[(2-6*x-12*x^2)/((1-x)^2*(1-9*x)), {x, 0, 21}], x]
PROG
(PARI) my(x='x+O('x^22)); Vec((2-6*x-12*x^2)/((1-x)^2*(1-9*x)))
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Georg Fischer, Oct 15 2020
STATUS
approved