OFFSET
1,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (5,-10,10,-5,1).
FORMULA
a(n) = (11*n^4 + 6*n^3 - 5*n^2)/12.
a(n) = 5*a(n-1) - 10*a(n-2) + 10*a(n-3) - 5*a(n-4) + a(n-5).
G.f.: x*(1 + 12*x + 9*x^2)/(1 - x)^5.
MATHEMATICA
(See A212891.)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jun 16 2012
STATUS
approved