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A032674
Digit '2' concatenated with a(n) is a lucky number.
1
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
1,2
CROSSREFS
Cf. A000959.
Sequence in context: A290751 A320518 A084720 * A117089 A356140 A114269
KEYWORD
nonn,base,less
AUTHOR
Patrick De Geest, May 15 1998
STATUS
approved