Coordination sequence for 9-dimensional cubic lattice.

Terms

a(0) =1a(1) =18a(2) =162a(3) =978a(4) =4482a(5) =16722a(6) =53154a(7) =148626a(8) =374274a(9) =864146a(10) =1854882a(11) =3742290a(12) =7159170a(13) =13079250a(14) =22952610a(15) =38878482a(16) =63821826a(17) =101880594a(18) =158611106a(19) =241419474a(20) =360027522a(21) =527022162a(22) =758497698a(23) =1074801042a(24) =1501390338