Coordination sequence for 4-dimensional RR-centered di-isohexagonal orthogonal lattice.

Terms

a(0) =1a(1) =18a(2) =102a(3) =318a(4) =732a(5) =1410a(6) =2418a(7) =3822a(8) =5688a(9) =8082a(10) =11070a(11) =14718a(12) =19092a(13) =24258a(14) =30282a(15) =37230a(16) =45168a(17) =54162a(18) =64278a(19) =75582a(20) =88140a(21) =102018a(22) =117282a(23) =133998a(24) =152232a(25) =172050a(26) =193518a(27) =216702a(28) =241668a(29) =268482