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Search: id:A113567
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| A113567 |
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Numbers n such that prime(n) +- n, prime(n) +- 2n and prime(n) +- 3n are all primes. |
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+0
1
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| 252420, 874650, 1413510, 2053380, 2298240, 2456160, 4640370, 7529340, 8708910, 11205390, 18734310, 22141980, 23680650, 26407920, 30866010, 31340400, 38515050, 43242780, 44584260, 58430400, 61172790, 62739180, 64449210
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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t = {}; p = 2*3*5*7; Do[ If[ PrimeQ[Prime[p*n] - p*3n] && PrimeQ[Prime[p*n] - p*2n] && PrimeQ[Prime[p*n] - p*n] && PrimeQ[Prime[p*n] + p*n] && PrimeQ[Prime[p*n] + p*2n] && PrimeQ[Prime[p*n] + p*3n], AppendTo[t, n]], {n, 2194723}]; p*t
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CROSSREFS
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Cf. A064403, A112530.
Adjacent sequences: A113564 A113565 A113566 this_sequence A113568 A113569 A113570
Sequence in context: A018236 A043655 A058004 this_sequence A083628 A140967 A069176
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 20 2005
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