a(n) = (1/720)*n*(n - 10)*(n - 1)*(n^3 - 34*n^2 + 181*n - 144).

Terms

a(0) =0a(1) =0a(2) =-2a(3) =-7a(4) =-10a(5) =-5a(6) =11a(7) =35a(8) =56a(9) =54a(10) =0a(11) =-143a(12) =-418a(13) =-871a(14) =-1547a(15) =-2485a(16) =-3712a(17) =-5236a(18) =-7038a(19) =-9063a(20) =-11210a(21) =-13321a(22) =-15169a(23) =-16445a(24) =-16744a(25) =-15550a(26) =-12220a(27) =-5967a(28) =4158a(29) =19285