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A023734
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Numbers with a single 3 in their base-5 expansion.
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4
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3, 8, 13, 15, 16, 17, 19, 23, 28, 33, 38, 40, 41, 42, 44, 48, 53, 58, 63, 65, 66, 67, 69, 73, 75, 76, 77, 79, 80, 81, 82, 84, 85, 86, 87, 89, 95, 96, 97, 99, 103, 108, 113, 115, 116, 117, 119, 123, 128, 133, 138, 140, 141, 142, 144, 148, 153, 158
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OFFSET
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1,1
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LINKS
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MAPLE
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seq(`if`(numboccur(3, convert(n, base, 5))=1, n, NULL), n=0..200); # Nathaniel Johnston, Jun 27 2011
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MATHEMATICA
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Select[ Range[ 150 ], (Count[ IntegerDigits[ #, 5 ], 3 ]==1)& ]
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CROSSREFS
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KEYWORD
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nonn,base,easy
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AUTHOR
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STATUS
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approved
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