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A224863
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Prime(n) such that prime(3n) - prime(2n) - prime(n) is a perfect cube.
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1
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2, 31, 911, 929, 941, 997, 1013, 4273, 4289, 8171, 13171, 20233, 20261, 57139, 123637, 229631, 278609, 278689, 328277, 526213, 611213, 703267, 906229, 1287479, 1287623, 1290031, 1442549, 1442723, 1443257, 1443311, 1443383, 1948343, 1948669, 2361899, 3331093
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OFFSET
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1,1
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COMMENTS
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The prime indices n are 1, 11, 156, 158, 160, 168, 170, 587, 589, 1026,... and the cubes are 0, 27, 343 (repeated 5 times), 1331 (repeated 2 times), 2197, 3375, 4913 (repeated 2 times),... - R. J. Mathar, Jul 27 2013
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LINKS
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EXAMPLE
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31 is in the sequence because 31 = prime(11) and prime(3*11) - prime(2*11) - prime(11) = 137 - 79 - 31 = 27 = 3^3.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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