Norms of vectors in the a.c.c. lattice, divided by 2.

Terms

a(0) =0a(1) =2a(2) =3a(3) =5a(4) =6a(5) =8a(6) =11a(7) =12a(8) =14a(9) =15a(10) =17a(11) =18a(12) =20a(13) =21a(14) =23a(15) =24a(16) =26a(17) =27a(18) =29a(19) =30a(20) =32a(21) =33a(22) =35a(23) =38a(24) =39a(25) =41a(26) =42a(27) =44a(28) =45a(29) =47