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A173840 Primes of the form 10^n+2*n+1 1
13, 10009, 1000000000000000000000049, 10000000000000000000000000000000000000000087, 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000189 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..5.

CROSSREFS

Cf. A174178.

Sequence in context: A205162 A122429 A173506 * A219315 A068731 A189309

Adjacent sequences:  A173837 A173838 A173839 * A173841 A173842 A173843

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Feb 26 2010

STATUS

approved

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Last modified May 21 06:21 EDT 2013. Contains 225475 sequences.