Total number of left truncatable primes (without zeros) in base n.

Terms

a(0) =0a(1) =3a(2) =16a(3) =15a(4) =454a(5) =22a(6) =446a(7) =108a(8) =4260a(9) =75a(10) =170053a(11) =100a(12) =34393a(13) =9357a(14) =27982a(15) =362a(16) =14979714a(17) =685a(18) =3062899a(19) =59131a(20) =1599447a(21) =1372a(22) =1052029701a(23) =10484a(24) =7028048a(25) =98336a(26) =69058060a(27) =3926