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Search: id:A126229
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| A126229 |
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Odd interprimes divisible by 7. |
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+0
8
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| 21, 105, 217, 231, 315, 399, 441, 483, 861, 987, 1113, 1197, 1281, 1449, 1491, 1505, 1575, 1715, 1785, 1827, 1869, 1995, 2121, 2191, 2205, 2247, 2303, 2541, 2667, 2709, 2751, 2835, 2933, 3045, 3073, 3129, 3213, 3255, 3353, 3381, 3423, 3465, 3675, 3885
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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Do[If[OddQ[(Prime[n + 1] + Prime[n])/2] && Mod[(Prime[n + 1] + Prime[n])/2, 7] == 0, Print[(Prime[n + 1] + Prime[n])/2]], {n, 1, 3000}] (*Artur Jasinski*)
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CROSSREFS
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Cf. A072569, A072572, A072573, A126228, A126230, A124619, A124620, A126231, A124622, A126233.
Sequence in context: A076454 A069499 A068142 this_sequence A060537 A116689 A068986
Adjacent sequences: A126226 A126227 A126228 this_sequence A126230 A126231 A126232
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KEYWORD
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nonn
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Dec 21 2006
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EXTENSIONS
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Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jan 09 2007
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