Number of points of L1 norm 12 in cubic lattice Z^n.

Terms

a(0) =0a(1) =2a(2) =48a(3) =578a(4) =4672a(5) =28610a(6) =142000a(7) =596610a(8) =2187520a(9) =7159170a(10) =21278640a(11) =58227906a(12) =148321344a(13) =354870594a(14) =803467056a(15) =1732242690a(16) =3575055360a(17) =7094825730a(18) =13591279920a(19) =25216532290a(20) =45443741760a(21) =79749022402