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A093400 Primes of the form 10*R_n + 9, where R_n is the repunit (A002275) of length n. 0
19, 11119, 111119, 11111119, 11111111111111119, 11111111111111111111111111111111111111111111111119 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

LINKS

Makoto Kamada, Prime numbers of the form 11...119

CROSSREFS

Cf. A056659 (corresponding n and count of digits 1 in a(n)).

Sequence in context: A067267 A124989 A156973 * A174306 A186165 A198412

Adjacent sequences:  A093397 A093398 A093399 * A093401 A093402 A093403

KEYWORD

nonn,changed

AUTHOR

Rick L. Shepherd (rshepherd2(AT)hotmail.com), Mar 28 2004

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Last modified February 17 09:41 EST 2012. Contains 206009 sequences.