Number of points in Z^n of norm <= 8.

Terms

a(0) =1a(1) =17a(2) =197a(3) =2109a(4) =20185a(5) =176377a(6) =1395261a(7) =10248133a(8) =70554353a(9) =458690081a(10) =2839094517a(11) =16837397901a(12) =95964034121a(13) =526432799625