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A206914
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Least binary palindrome >= n; the binary palindrome ceiling function.
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75
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0, 1, 3, 3, 5, 5, 7, 7, 9, 9, 15, 15, 15, 15, 15, 15, 17, 17, 21, 21, 21, 21, 27, 27, 27, 27, 27, 27, 31, 31, 31, 31, 33, 33, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 51, 51, 51, 51, 51, 51, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 65, 65, 73, 73
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OFFSET
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0,3
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COMMENTS
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For n > 0 also the least binary palindrome > n - 1;
a(n+1) is the least binary palindrome > n
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LINKS
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FORMULA
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EXAMPLE
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a(0) = 0 since 0 is the least binary palindrome >= 0;
a(1) = 1 since 1 is the least binary palindrome >= 1;
a(2) = 3 since 3 is the least binary palindrome >= 2;
a(5) = 5 since 5 is the least binary palindrome >= 5;
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PROG
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(Haskell)
a206914 n = head $ dropWhile (< n) a006995_list
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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