Smallest prime larger than 3^n whose digits begin with those of 3^n.

Terms

a(0) =11a(1) =31a(2) =97a(3) =271a(4) =811a(5) =2437a(6) =7297a(7) =21871a(8) =65617a(9) =196831a(10) =5904901a(11) =17714701a(12) =5314411a(13) =15943237a(14) =47829697a(15) =1434890761a(16) =4304672117a(17) =1291401637a(18) =3874204891a(19) =116226146719a(20) =348678440113a(22) =313810596091