Squares n^2 that become prime after omitting all ones in their decimal expansion.

Terms

a(0) =121a(1) =1089a(2) =11449a(3) =21609a(4) =31329a(5) =56169a(6) =117649a(7) =127449a(8) =131769a(9) =139129a(10) =142129a(11) =154449a(12) =178929a(13) =199809a(14) =431649a(15) =471969a(16) =751689a(17) =1014049a(18) =1159929a(19) =1172889a(20) =1194649a(21) =1530169a(22) =1841449a(23) =2211169a(24) =2411809a(25) =2518569a(26) =2634129a(27) =3108169a(28) =3143529