Maximum cardinality of finite D0L sequence over an alphabet with n symbols.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =12a(8) =15a(9) =20a(10) =30a(11) =31a(12) =60a(13) =61a(14) =84a(15) =105a(16) =140a(17) =210a(18) =211a(19) =420a(20) =421a(21) =422a(22) =423a(23) =840a(24) =841a(25) =1260a(26) =1261a(27) =1540a(28) =2310a(29) =2520