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A068161 Smallest prime beginning and ending in at least n 3's. 2
3, 33533, 3331333, 3333133333, 333331033333, 33333362333333, 333333313333333, 333333332933333333, 33333333316333333333, 3333333333133333333333, 33333333333733333333333 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
a(2) = 33533 is a prime that starts with 33 and ends in 33 (two 3's).
CROSSREFS
Cf. A068160.
Sequence in context: A175875 A030463 A086509 * A116313 A140656 A135760
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Feb 24 2002
EXTENSIONS
Corrected and extended by Robert Gerbicz, Sep 06 2002
STATUS
approved

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Last modified May 15 08:34 EDT 2024. Contains 372538 sequences. (Running on oeis4.)