Primes arising in A089374.

Terms

a(0) =31a(1) =421a(2) =71a(3) =131a(4) =191a(5) =2551a(6) =311a(7) =391331a(8) =431a(10) =911371a(11) =971a(12) =1031a(13) =1091a(14) =1173913931a(15) =1511a(16) =1571a(17) =1811a(18) =1931a(19) =2111a(20) =2411a(21) =24412261421a(22) =24719131a(23) =2711a(24) =289171a(25) =29214673421a(26) =3014371a(27) =30910331a(28) =32565251351a(29) =3371a(30) =3491