Primes of form 4k+3 written in base 3.

Terms

a(0) =10a(1) =21a(2) =102a(3) =201a(4) =212a(5) =1011a(6) =1121a(7) =1202a(8) =2012a(9) =2111a(10) =2122a(11) =2221a(12) =10002a(13) =10211a(14) =10222a(15) =11201a(16) =11212a(17) =12011a(18) =12121a(19) =20001a(20) =20012a(21) =20122a(22) =21002a(23) =21101a(24) =21211a(25) =22021a(26) =22102a(27) =22212a(28) =100022a(29) =100202