a(n) = n^2*(n^10 + 1)/2.

Terms

a(0) =0a(1) =1a(2) =2050a(3) =265725a(4) =8388616a(5) =122070325a(6) =1088391186a(7) =6920643625a(8) =34359738400a(9) =141214768281a(10) =500000000050