OFFSET
1,1
LINKS
Index entries for linear recurrences with constant coefficients, signature (5,-10,10,-5,1).
FORMULA
a(n) = n*(n+1)*(3*n+2)*(3*n+5)/8.
O.g.f.: -x*(10+16*x+x^2)/(-1+x)^5 . - R. J. Mathar, Feb 14 2008
MATHEMATICA
LinearRecurrence[{5, -10, 10, -5, 1}, {10, 66, 231, 595, 1275}, 50] (* Harvey P. Dale, Aug 19 2019 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved