Maximum period of an elementary cellular automaton in a cyclic universe of width n.

Terms

a(0) =2a(1) =2a(2) =6a(3) =8a(4) =30a(5) =18a(6) =126a(7) =40a(8) =504a(9) =430a(10) =979a(11) =240a(12) =1105a(13) =2198a(14) =6820a(15) =6016a(16) =78812a(17) =7812a(18) =183920a(19) =142580a(20) =352884a(21) =122870a(22) =3459591a(23) =421188a(24) =10828525a(25) =334308a(26) =81688176a(27) =989212a(28) =463347935a(29) =5921860