OFFSET
0,4
COMMENTS
Binomial transform of A081685.
LINKS
Index entries for linear recurrences with constant coefficients, signature (25,-245,1175,-2754,2520).
FORMULA
G.f.: -(1326*x^4-886*x^3+219*x^2-24*x+1)/((3*x-1)*(4*x-1)*(5*x-1)*(6*x-1)*(7*x-1)). [Colin Barker, Sep 07 2012]
From Elmo R. Oliveira, Sep 12 2024: (Start)
E.g.f.: exp(3*x)*(exp(4*x) - exp(3*x) - exp(2*x) - exp(x) + 3).
a(n) = 25*a(n-1) - 245*a(n-2) + 1175*a(n-3) - 2754*a(n-4) + 2520*a(n-5) for n > 4. (End)
CROSSREFS
KEYWORD
easy,sign
AUTHOR
Paul Barry, Mar 30 2003
EXTENSIONS
a(22)-a(23) from Elmo R. Oliveira, Sep 12 2024
STATUS
approved