Numbers k such that (44*10^k - 791)/9 is prime.

Terms

a(0) =2a(1) =3a(2) =9a(3) =15a(4) =20a(5) =23a(6) =63a(7) =66a(8) =75a(9) =93a(10) =120a(11) =480a(12) =504a(13) =812a(14) =872a(15) =1124a(16) =3888a(17) =9882a(18) =14859a(19) =33786a(20) =44736a(21) =83768