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.

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

Offset: 1

Author

Leroy Quet, Aug 28 2009

Keywords

• base
• nonn

Comments

Every integer that occurs in this sequence occurs at least twice.

Examples

			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.

Extensions

Extended by Ray Chandler, Mar 14 2010