Greater prime factor of successively better golden semiprimes.

Terms

a(0) =3a(1) =5a(2) =11a(3) =31a(4) =37a(5) =47a(6) =157a(7) =571a(8) =911a(9) =1021a(10) =1487a(11) =2351a(12) =3571a(13) =24709a(14) =25463a(15) =69247a(16) =80803a(17) =216103a(18) =290141a(19) =465277a(20) =822691a(21) =1485373a(22) =1785473a(23) =3206767a(24) =14855327a(25) =27439609a(26) =28075231a(27) =84468479a(28) =107765599a(29) =161223523