OFFSET
0,6
LINKS
Index entries for linear recurrences with constant coefficients, signature (5,-10,10,-6,6,-10,10,-5,1).
FORMULA
From R. J. Mathar, Apr 15 2010: (Start)
G.f.: x^4*(x^4+1+2*x-3*x^2+2*x^3) / ((1-x)^5*(x^4+1) ).
a(n) = +5*a(n-1) -10*a(n-2) +10*a(n-3) -6*a(n-4) +6*a(n-5) -10*a(n-6) +10*a(n-7) -5*a(n-8) +a(n-9). (End)
PROG
(Magma) [Floor(n*(n-1)*(n-2)*(n-3)/16) : n in [0..100]]; // Wesley Ivan Hurt, Apr 20 2021
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved