A032674 Digit '2' concatenated with a(n) is a lucky number.

1, 5, 11, 19, 23, 31, 35, 37, 41, 59, 61, 67, 73, 83, 85, 89, 97, 113, 115, 121, 125, 127, 133, 163, 173, 187, 209, 211, 215, 217, 221, 239, 251, 253, 257, 271, 277, 281, 283, 301, 311, 317, 323, 335, 343, 355, 365, 379, 395, 403, 407, 409, 415

Offset: 1

Author

Patrick De Geest, May 15 1998

Keywords

• nonn
• base
• less

Crossrefs

Cf. A000959.