a(n) = [ n/{n*sqrt(6)} ], where {x} := x - [ x ].

Terms

a(0) =2a(1) =2a(2) =8a(3) =5a(4) =20a(5) =8a(6) =47a(7) =13a(8) =198a(9) =20a(10) =11a(11) =30a(12) =15a(13) =47a(14) =20a(15) =83a(16) =26a(17) =198a(18) =35a(19) =20a(20) =47a(21) =24a(22) =67a(23) =30a(24) =105a(25) =37a(26) =198a(27) =47a(28) =823a(29) =61