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A164862 a(n) is the smallest positive integer that, when written in binary, contains the binary representations of both A164861(n) and the reversal of the order of the digits of A164861(n) as (overlapping) substrings. 0
27, 27, 51, 93, 51, 93, 99, 165, 231, 165, 107, 189, 99, 107, 119, 231, 119, 189, 195, 325, 455, 843, 717, 633, 325, 1619, 471, 717, 219, 381, 195, 1619, 231, 843, 219, 495, 455, 231, 471, 633, 495, 381, 387, 645, 903, 1161, 1675, 1421, 1935, 1161, 403, 1193 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Every integer that occurs in this sequence occurs at least twice.
LINKS
EXAMPLE
The second odd non-binary-palindrome is 13, which is 1101 in binary. The smallest positive integer that, when written in binary, contains both 1101 and its reverse (1011) is 27, which is 11011 in binary.
CROSSREFS
Cf. A164861.
Sequence in context: A219235 A010866 A291516 * A040703 A022361 A238370
KEYWORD
base,nonn
AUTHOR
Leroy Quet, Aug 28 2009
EXTENSIONS
Extended by Ray Chandler, Mar 14 2010
STATUS
approved

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Last modified July 15 01:36 EDT 2024. Contains 374323 sequences. (Running on oeis4.)