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A068651
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Primes in which a string of 2's is sandwiched between two 9's.
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2
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OFFSET
| 1,1
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COMMENTS
| The next term consists of 109 2's sandwiched between two 9's. - Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 27 2002
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FORMULA
| a(n) = (83*10^A056265(n+1) + 61)/9 = (83*10^A082718(n-1) + 61)/9. - Chandler
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CROSSREFS
| Cf. A068645, A068646, A068647, A068648, A068649, A068650.
Sequence in context: A099688 A074889 A109184 * A175726 A115958 A158679
Adjacent sequences: A068648 A068649 A068650 * A068652 A068653 A068654
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KEYWORD
| base,nonn,bref
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 28 2002
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EXTENSIONS
| Edited by Ray Chandler (rayjchandler(AT)sbcglobal.net), Oct 20 2010
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