OFFSET
1,2
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..1000
Index entries for linear recurrences with constant coefficients, signature (12,-53,106,-96,32).
FORMULA
a(n) = 12*a(n-1) - 53*a(n-2) + 106*a(n-3) - 96*a(n-4) + 32*a(n-5).
G.f.: f(x)/g(x), where f(x) = x*(1 + 4*x - 14*x^2) and g(x) = (1 - 2*x)*(1 - 5*x + 4*x^2)^2.
a(n) = 2 - 2^n + 4^n*(n-1) + n. - Colin Barker, Nov 07 2017
MATHEMATICA
(See A213747.)
LinearRecurrence[{12, -53, 106, -96, 32}, {1, 16, 125, 758, 4071}, 30] (* Harvey P. Dale, Aug 15 2012 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jun 19 2012
STATUS
approved