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A039041
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Numbers n such that representation in base 7 has same number of 2's and 4's.
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0
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0, 1, 3, 5, 6, 7, 8, 10, 12, 13, 18, 21, 22, 24, 26, 27, 30, 35, 36, 38, 40, 41, 42, 43, 45, 47, 48, 49, 50, 52, 54, 55, 56, 57, 59, 61, 62, 67, 70, 71, 73, 75, 76, 79, 84, 85, 87, 89, 90, 91, 92, 94, 96, 97, 102, 109, 123, 126, 127, 129, 131, 132, 137, 144, 147, 148
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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MATHEMATICA
| Select[Range[0, 200], DigitCount[#, 7, 2]==DigitCount[#, 7, 4]&] (* From Harvey P. Dale, Dec 18 2011 *)
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CROSSREFS
| Sequence in context: A080651 A047330 A093511 * A079253 A076054 A139636
Adjacent sequences: A039038 A039039 A039040 * A039042 A039043 A039044
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KEYWORD
| nonn,base,easy
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AUTHOR
| Olivier Gerard (olivier.gerard(AT)gmail.com)
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