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A076504
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Numbers n such that (n-1,n+1) and (n/2-1,n/2+1) are both pairs of twin primes.
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0
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12, 60, 1320, 1620, 4260, 5100, 6660, 6780, 11700, 12540, 21060, 66360, 83220, 88260, 107100, 110880, 114660, 127680, 130200, 140760, 141960, 144540, 148200, 149520, 157560, 161340, 163860, 175080, 186480, 204600, 230940, 249540
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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MATHEMATICA
| lst={}; Do[p=Prime[n]; p1=Prime[n+1]; pp=p+p1; If[p1-p==2&&PrimeQ[pp-1]&&PrimeQ[pp+1], AppendTo[lst, pp]], {n, 8!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), May 27 2010]
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CROSSREFS
| Equals 2*A066388.
Sequence in context: A108096 A056388 A056378 * A044150 A044531 A114241
Adjacent sequences: A076501 A076502 A076503 * A076505 A076506 A076507
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KEYWORD
| nonn
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com), Oct 15, 2002
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EXTENSIONS
| Definition corrected by Jaroslav Krizek (jaroslav.krizek(AT)atlas.cz), Apr 12 2009
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