Primes whose consecutive digits differ by 3 or 4.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =37a(5) =41a(6) =47a(7) =59a(8) =73a(9) =151a(10) =251a(11) =263a(12) =269a(13) =373a(14) =859a(15) =3037a(16) =3041a(17) =3637a(18) =4159a(19) =5147a(20) =5851a(21) =6263a(22) =6269a(23) =6373a(24) =6959a(25) =7369a(26) =14159a(27) =14737a(28) =14741a(29) =14747