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A074200
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a(n) = m, the smallest number such that (m+k)/k is prime for k=1, 2, ..., n.
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1
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1, 2, 12, 12720, 19440, 5516280, 5516280, 7321991040, 363500177040, 2394196081200, 3163427380990800, 22755817971366480, 3788978012188649280, 2918756139031688155200
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Computed by Jack Brennen and Phil Carmody
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LINKS
| C. Rivera, Puzzle 181
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EXAMPLE
| (12+k)/k is prime for k = 1,2,3. 12 is the smallest such number so a(3) = 12.
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CROSSREFS
| Cf. A078502. See A093553 for another version.
Sequence in context: A000887 A118542 A007155 * A048830 A038081 A027737
Adjacent sequences: A074197 A074198 A074199 * A074201 A074202 A074203
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KEYWORD
| nonn
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AUTHOR
| Jean-Christophe Colin (jc-colin(AT)wanadoo.fr), Sep 17 2002, May 10 2010
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EXTENSIONS
| Corrected by Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 08 2003
a(14) from Jens Kruse Andersen (jens.k.a(AT)get2net.dk), Feb 15 2004
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