a(n) is the smallest composite n-Lehmer number.

Terms

a(0) =561a(1) =15a(2) =451a(3) =51a(4) =679a(5) =255a(6) =2091a(7) =771a(8) =43435a(9) =3855a(10) =31611a(11) =13107a(12) =272163a(13) =65535a(14) =494211a(15) =196611a(16) =2089011a(17) =983055a(18) =8061051a(19) =3342387a(20) =31580931a(21) =16711935a(22) =126027651a(23) =50529027a(24) =756493591a(25) =252645135a(26) =4446487299a(27) =858993459a(28) =8053383171a(29) =4294967295