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Search: id:A161602
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| A161602 |
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Positive integers n that are each more than the value of the reversal of n's representation in binary. |
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+0
3
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| 2, 4, 6, 8, 10, 12, 13, 14, 16, 18, 20, 22, 24, 25, 26, 28, 29, 30, 32, 34, 36, 38, 40, 41, 42, 44, 46, 48, 49, 50, 52, 53, 54, 56, 57, 58, 59, 60, 61, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 81, 82, 84, 86, 88, 89, 90, 92, 94, 96, 97, 98, 100, 101, 102, 104, 105, 106, 108, 109
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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By "reversal" of n's representation in binary, it is meant: write n in binary (without its leading 0's) from most significant digits on the right and least significant digits on the left, instead of writing n from left to right as is usual. Then interpret the new integer by reading it from left to right.
This sequence contains all even positive integers.
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EXAMPLE
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29 in binary is 11101. Its digital reversal is 10111, which is 23 in decimal. Since 29 > 23, then 29 is in this sequence.
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CROSSREFS
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A030101, A006995, A161601, A161603
Sequence in context: A050420 A096922 A055954 this_sequence A055956 A161207 A076428
Adjacent sequences: A161599 A161600 A161601 this_sequence A161603 A161604 A161605
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KEYWORD
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base,nonn
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AUTHOR
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Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), Jun 14 2009
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EXTENSIONS
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More terms from Max Alekseyev (maxale(AT)gmail.com), Sep 11 2009
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