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Search: id:A118508
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| 6949, 9521, 13127, 13627, 19801, 25969, 41897, 43457, 61949
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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Level : a(n)= 257 = l/k with smallest k such that prime(n+1) = prime(n) + (prime(n) mod k), or 0 if no such k exists and largest l such that prime(n+1) = prime(n) + (prime(n) mod l), or 0 if no such l exists (0,if k=0).
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EXAMPLE
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6959=6949+6949mod(27)=6949+6949mod(6939), level=6939/27=257
13633=13627+13627mod(53)=13627+13627mod(13621), level=13621/53=257
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CROSSREFS
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Cf. A117563, A117078, A117873, A006562.
Sequence in context: A004245 A059462 A072870 this_sequence A028542 A050225 A050673
Adjacent sequences: A118505 A118506 A118507 this_sequence A118509 A118510 A118511
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KEYWORD
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nonn
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AUTHOR
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Chantal di Sturco (chantaldisturco(AT)wanadoo.fr), May 06 2006
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EXTENSIONS
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One more term from Remi Eismann (reismann(AT)free.fr), Aug 21 2006
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