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A032669 Digit '6' concatenated with n is a prime. 4
1, 7, 13, 17, 19, 31, 41, 43, 47, 53, 59, 61, 73, 77, 83, 91, 101, 113, 121, 131, 133, 143, 151, 163, 173, 197, 199, 203, 211, 217, 221, 229, 247, 257, 263, 269, 271, 277, 287, 299, 301, 311, 317, 323, 329, 337, 343, 353, 359, 361, 367, 373, 379 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A045979 A079699 A053176 * A231607 A147603 A106084
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, May 15 1998
STATUS
approved

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Last modified September 9 15:11 EDT 2024. Contains 375765 sequences. (Running on oeis4.)