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Search: id:A136351
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| A136351 |
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Primorial numbers #p such that (#p)+1 is a prime. |
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+0
4
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OFFSET
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1,1
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COMMENT
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This sequence is different from A121069 and A002110.
a(7)=A002110(75) has 154 digits and is too long to be listed. - R. J. Mathar, Jul 23 2008
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FORMULA
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{A002110(j): A002110(j)+1 in A000040}. - R. J. Mathar, Jul 23 2008
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EXAMPLE
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a(5)=2310 is followed by prime 2311 whereas 30030 is not followed by a prime.
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CROSSREFS
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Cf. A136349, A136350, A136352, A002110, A121069.
Adjacent sequences: A136348 A136349 A136350 this_sequence A136352 A136353 A136354
Sequence in context: A088257 A058694 A046853 this_sequence A071290 A093449 A083002
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KEYWORD
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easy,nonn
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AUTHOR
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Enoch Haga (Enokh(AT)comcast.net), Dec 25 2007
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EXTENSIONS
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Changed a(1) from 4 to 2 and edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 23 2008
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