Least number requiring the base n to produce a prime by base reversal.

Terms

a(0) =2a(1) =3a(2) =15a(3) =8a(4) =109a(5) =9a(6) =119a(7) =16a(8) =27a(9) =70a(10) =2197a(11) =36a(12) =1265a(13) =158a(14) =213a(15) =178a(16) =4205a(17) =126a(18) =14189a(19) =260a(20) =273a(21) =304a(22) =4865a(23) =120a(24) =1295a(25) =78a(26) =81a(27) =532a(28) =44323a(29) =150