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A176275
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Numbers of the form 6k+1 with the least prime divisor of the form 6m-1
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2
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25, 55, 85, 115, 121, 145, 175, 187, 205, 235, 253, 265, 289, 295, 319, 325, 355, 385, 391, 415, 445, 451, 475, 493, 505, 517, 529, 535, 565, 583, 595, 625, 649, 655, 667, 685, 697, 715, 745, 775, 781, 799, 805, 835, 841, 865, 895, 901, 913, 925, 943, 955, 979, 985, 1003, 1015, 1045, 1075
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OFFSET
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1,1
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COMMENTS
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All terms of A108166 are in the sequence.
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LINKS
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MATHEMATICA
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Select[6*Range[200] + 1, IntegerQ[(FactorInteger[#][[1, 1]] + 1)/6] &] (* Harvey P. Dale, Sep 19 2018 *)
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PROG
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(PARI) isok(n) = ((n % 6) == 1) && (n != 1) && ((vecmin(factor(n)[, 1]) % 6) == 5); \\ Michel Marcus, Feb 08 2016
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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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