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A093162 Primes of the form 20*R_n + 3, where R_n is the repunit (A002275) of length n. +0
2
3, 23, 223, 22222223, 22222222223, 222222222222222222222222222222222223 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Cf. A056656 (corresponding n).

Sequence in context: A114017 A068691 A093135 this_sequence A068954 A068955 A151393

Adjacent sequences: A093159 A093160 A093161 this_sequence A093163 A093164 A093165

KEYWORD

nonn

AUTHOR

Rick L. Shepherd (rshepherd2(AT)hotmail.com), Mar 26 2004

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

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