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A029747
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Numbers of the form 2^k times 1, 3 or 5.
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50
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1, 2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 24, 32, 40, 48, 64, 80, 96, 128, 160, 192, 256, 320, 384, 512, 640, 768, 1024, 1280, 1536, 2048, 2560, 3072, 4096, 5120, 6144, 8192, 10240, 12288, 16384, 20480, 24576, 32768, 40960, 49152, 65536, 81920, 98304, 131072, 163840, 196608
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OFFSET
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1,2
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COMMENTS
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LINKS
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FORMULA
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EXAMPLE
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128 = 2^7 * 1 is in the sequence as well as 160 = 2^5 * 5. - David A. Corneth, Sep 18 2020
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MATHEMATICA
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m = 200000; Select[Union @ Flatten @ Outer[Times, {1, 3, 5}, 2^Range[0, Floor[Log2[m]]]], # < m &] (* Amiram Eldar, Oct 15 2020 *)
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PROG
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CROSSREFS
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Even terms form a subsequence of A320674.
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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