A032671 Digit '8' concatenated with a(n) is a prime.
3, 9, 11, 21, 23, 27, 29, 39, 53, 57, 59, 63, 77, 81, 83, 87, 101, 111, 117, 123, 147, 161, 167, 171, 179, 191, 209, 219, 221, 231, 233, 237, 243, 263, 269, 273, 287, 291, 293, 297, 311, 317, 329, 353, 363, 369, 377, 387, 389, 419, 423, 429, 431, 443, 447
Offset: 1
Links
- Seiichi Manyama, Table of n, a(n) for n = 1..10000