Number of permutations of decimal digits of 2^n which yield a prime.

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =1a(5) =0a(6) =2a(7) =0a(8) =2a(9) =4a(10) =0a(11) =0a(12) =5a(13) =19a(14) =10a(15) =3a(16) =87a(17) =9a(18) =0a(19) =377a(20) =293a(21) =84a(22) =9a(23) =265a(24) =142a(25) =502a(26) =4916a(27) =979a(28) =30453a(29) =38758