Numbers k such that 63*10^k + 1 is prime.

Terms

a(0) =1a(1) =2a(2) =12a(3) =21a(4) =27a(5) =30a(6) =33a(7) =44a(8) =46a(9) =76a(10) =78a(11) =83a(12) =84a(13) =92a(14) =582a(15) =750a(16) =787a(17) =3218a(18) =3290a(19) =5617a(20) =6385a(21) =13960a(22) =22705a(23) =27636a(24) =36497a(25) =50349a(26) =51169a(27) =70381a(28) =70486a(29) =73096