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A093405 Primes of the form 80*R_n + 9, where R_n is the repunit (A002275) of length n. +0
1
89, 88888888888889, 88888888888888889, 88888888888888888888888888888888889 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Cf. A056663 (corresponding n).

Sequence in context: A072314 A087538 A087341 this_sequence A058631 A078293 A052999

Adjacent sequences: A093402 A093403 A093404 this_sequence A093406 A093407 A093408

KEYWORD

nonn

AUTHOR

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

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Last modified November 21 15:14 EST 2009. Contains 167308 sequences.

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