Smallest prime factor of googol + n that exceeds 13, or 1 if googol + n is 13-smooth.

Terms

a(0) =73a(1) =4832936419a(2) =157a(3) =20794121a(4) =127a(5) =859493a(6) =557a(7) =113a(8) =3221a(9) =19a(10) =7549a(11) =43a(12) =17a(13) =61a(14) =211a(15) =241a(16) =18617a(17) =907a(18) =419a(19) =47a(20) =443a(21) =911a(23) =1109a(24) =53a(25) =31a(26) =37a(27) =2543a(28) =19a(29) =17a(30) =617