Primes p = prime(k) of form 13//r, s//13 or t//13//u and sod(p) = sod(k).

Terms

a(0) =131a(1) =1301a(2) =1361a(3) =1913a(4) =3137a(5) =7013a(6) =7213a(7) =11353a(8) =12613a(9) =13007a(10) =13037a(11) =13127a(12) =13217a(13) =13297a(14) =13327a(15) =13339a(16) =13367a(17) =13417a(18) =13457a(19) =13933a(20) =15913a(21) =18013a(22) =22613a(23) =29131a(24) =31391a(25) =41131a(26) =41333a(27) =51131a(28) =54013a(29) =57139