Number of points in Z^10 of norm <= n.

Terms

a(0) =1a(1) =21a(2) =4541a(3) =198765a(4) =3083569a(5) =27634481a(6) =164379601a(7) =759891589a(8) =2839094517a(9) =9183188589a(10) =26107328109a(11) =67602028569a(12) =160441685209a(13) =357086356401a(14) =746545031221