a(n) = 840*n^2 - 23100*n + 86861.

Terms

a(0) =86861a(1) =64601a(2) =44021a(3) =25121a(4) =7901a(5) =-7639a(6) =-21499a(7) =-33679a(8) =-44179a(9) =-52999a(10) =-60139a(11) =-65599a(12) =-69379a(13) =-71479a(14) =-71899a(15) =-70639a(16) =-67699a(17) =-63079a(18) =-56779a(19) =-48799a(20) =-39139a(21) =-27799a(22) =-14779a(23) =-79a(24) =16301a(25) =34361a(26) =54101a(27) =75521a(28) =98621a(29) =123401