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Search: id:A114786
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| A114786 |
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Smallest prime of the form: all fours followed by prime(n). a(n) >prime(n). 0 if no such prime exists. |
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+0
2
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| 0, 43, 0, 47, 44444444444444411, 44444444413, 44417, 419, 4423, 4444444429, 431, 444444437, 4441, 443, 4447, 44453, 44444459, 461, 467, 4444471, 444473, 479, 4483, 44444489, 44497, 44101, 444444103, 444444444444107, 444109, 444113, 4127
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Prime(n) is all zeros followed by prime(n).This is all fours followed by prime(n). Conjecture: No term is zero for n > 3.
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EXAMPLE
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a(7) = 44417, as 417,4417 are composite prime(7) = 17.
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CROSSREFS
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Cf. A114783, A114784, A114785.
Sequence in context: A135425 A028669 A070177 this_sequence A139424 A051318 A036202
Adjacent sequences: A114783 A114784 A114785 this_sequence A114787 A114788 A114789
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 17 2005
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EXTENSIONS
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More terms from Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), May 06 2006
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