a(n) = n^9*(n^4 + 1)/2.A170786a(n) = n^9*(n^4 + 1)/2.Terms a(0) =0a(1) =1a(2) =4352a(3) =807003a(4) =33685504a(5) =611328125a(6) =6535385856a(7) =48464682007a(8) =274945015808External referencesoeis: A170786