Primes whose 10's complement is a triangular number.

Terms

a(0) =7a(1) =79a(2) =97a(3) =139a(4) =439a(5) =769a(6) =829a(7) =997a(8) =1999a(9) =3559a(10) =6679a(11) =6997a(12) =7789a(13) =9439a(14) =9649a(15) =9769a(16) =9829a(17) =20599a(18) =25309a(19) =32839a(20) =34297a(21) =36097a(22) =42709a(23) =44389a(24) =49279a(25) =49597a(26) =56929a(27) =64489a(28) =65809a(29) =72739