Coordination sequence for root lattice B_9.

Terms

a(0) =1a(1) =162a(2) =5154a(3) =67266a(4) =507906a(5) =2653346a(6) =10666146a(7) =35310402a(8) =100746498a(9) =255708578a(10) =590675490a(11) =1262903490a(12) =2531446530a(13) =4804547490a(14) =8702041250a(15) =15135668034a(16) =25410452994a(17) =41350565538a(18) =65453329442a(19) =101075312322a(20) =152654680578a(21) =225974263458a(22) =328470027426a(23) =469589919554