Number of prime substrings of prime numbers in A037272.

Terms

a(0) =2a(1) =2a(2) =8a(3) =2a(4) =2a(5) =3a(6) =2a(7) =2a(8) =3a(9) =3a(10) =3a(11) =2a(12) =2a(13) =4a(14) =2a(15) =2a(16) =2a(17) =3a(18) =2a(19) =3a(20) =2a(21) =3a(22) =2a(23) =3a(24) =2a(25) =2a(26) =4a(27) =2a(28) =2a(29) =3