Erroneous version of A092927.

Terms

a(0) =2a(1) =3a(2) =13a(3) =5a(4) =31a(5) =7a(6) =337a(7) =73a(8) =30241a(9) =11a(10) =1321a(11) =13a(12) =121080961a(13) =211a(14) =241a(15) =17a(16) =307a(17) =19a(18) =6841