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A068645
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Primes in which a string of 3's is sandwiched between two 1's.
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6
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OFFSET
| 1,1
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COMMENTS
| a(5) consists of 93 and a(6) consists of 159 3's sandwiched between two 1's. - Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 26 2002
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CROSSREFS
| Sequence in context: A075509 A061113 A101334 * A097258 A044041 A158536
Adjacent sequences: A068642 A068643 A068644 * A068646 A068647 A068648
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 28 2002
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EXTENSIONS
| More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 26 2002
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