a(n) = n^9*(n^6 + 1)/2.A170788a(n) = n^9*(n^6 + 1)/2.Terms a(0) =0a(1) =1a(2) =16640a(3) =7184295a(4) =537001984a(5) =15259765625a(6) =235097531136External referencesoeis: A170788