Numbers k such that 3*10^k + 13 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =10a(4) =12a(5) =13a(6) =26a(7) =37a(8) =56a(9) =66a(10) =288a(11) =404a(12) =3495a(13) =3824a(14) =7780a(15) =14824a(16) =17928a(17) =18680a(18) =21414a(19) =23782a(20) =25392a(21) =34749a(22) =36180a(23) =46316a(24) =48477a(25) =63522a(26) =73962a(27) =89206a(28) =139722a(29) =172812