Smallest number whose shortest Lucas chain is of length n.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =11a(5) =17a(6) =23a(7) =37a(8) =53a(9) =83a(10) =127a(11) =197a(12) =331a(13) =461a(14) =739a(15) =1123a(16) =1801a(17) =2903a(18) =4463a(19) =6947a(20) =10973a(21) =17539a(22) =26627a(23) =43103a(24) =67079a(25) =109639a(26) =160649a(27) =271829a(28) =432199a(29) =665789