T(n,k) is the number of bounded regions in B(k, n) (see link).

Terms

a(0) =0a(1) =1a(2) =0a(3) =2a(4) =2a(5) =0a(6) =3a(7) =13a(8) =6a(9) =0a(10) =4a(11) =42a(12) =192a(13) =24a(14) =0a(15) =5a(16) =101a(17) =1858a(18) =5388a(19) =120a(20) =0a(21) =6a(22) =205a(23) =10644a(24) =204117a(25) =255180a(26) =720a(27) =0a(28) =7a(29) =372