Coordination sequence for lattice D*_10 (with edges defined by l_1 norm = 1).

Terms

a(0) =1a(1) =20a(2) =200a(3) =1340a(4) =6800a(5) =29028a(6) =108120a(7) =355980a(8) =1047840a(9) =2793140a(10) =6830056a(11) =15502300a(12) =32993200a(13) =66410500a(14) =127335800a(15) =233975084a(16) =414071360a(17) =708767060a(18) =1177632520a(19) =1905107580a(20) =3008636112a(21) =4648808100a(22) =7041860760a(23) =10474929100a(24) =15324477280a(25) =22078385140a(26) =31362209320