Interprimes which are of the form s*prime, s=10.

Terms

a(0) =30a(1) =50a(2) =170a(3) =370a(4) =590a(5) =610a(6) =730a(7) =1370a(8) =1390a(9) =1910a(10) =1990a(11) =2290a(12) =3310a(13) =3730a(14) =4010a(15) =4990a(16) =5410a(17) =6070a(18) =6590a(19) =7190a(20) =7870a(21) =8770a(22) =9470a(23) =9970a(24) =10610a(25) =11090a(26) =11810a(27) =11930a(28) =12970a(29) =14470