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A154565
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One-half of averages of twin prime pairs of A001318.
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1
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2, 15, 51, 210, 330, 651, 1365, 1650, 1926, 3480, 5430, 5985, 6501, 11310, 16485, 16590, 21660, 25026, 27270, 28635, 35190, 38001, 39285, 46905, 48690, 58905, 64170, 90651, 109485, 143376, 148995, 151845, 190995, 311676, 316251, 332526
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listen;
history;
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internal format)
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OFFSET
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1,1
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LINKS
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G. C. Greubel, Table of n, a(n) for n = 1..1000
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MATHEMATICA
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q=3; lst={}; s=0; Do[s+=n/q; If[Floor[s]==s, If[PrimeQ[2*s-1]&&PrimeQ[2*s+1], AppendTo[lst, s]]], {n, 0, 8!}]; lst
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CROSSREFS
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Cf. A154563, A074378.
Sequence in context: A025213 A290631 A116693 * A066562 A073877 A248538
Adjacent sequences: A154562 A154563 A154564 * A154566 A154567 A154568
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KEYWORD
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nonn
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AUTHOR
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Vladimir Joseph Stephan Orlovsky, Jan 12 2009
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STATUS
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approved
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