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 A165785 Base 10 representation of A240602. 3
 0, 1, 3, 5, 7, 15, 27, 31, 45, 63, 85, 93, 119, 127, 255, 495, 511, 891, 1023, 1755, 1787, 2015, 2047, 2925, 4095, 5805, 5869, 8127, 8191, 10965, 11997, 15351, 16383, 21845, 21973, 23901, 24029, 30583, 30711, 32639, 32767, 65535, 130815, 131071, 253935 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Each term is a palindrome when written in base 2. This entry is the result of merging two sequences. The old definition (which did not have the initial zero) was: "a(1)=1. For n >= 2, each a(n) = the decimal equivalent of either a(k)Ua(k) or a(k)U0Ua(k) or a(k)U1Ua(k), where U denotes concatenation of the binary representations of the arguments, and where k is some positive integer < n. The numbers are arranged in numerical order." LINKS Lior Manor, Table of n, a(n) for n = 1..1000 MATHEMATICA Select[Range[2^14], And[PalindromeQ@ Take[#, Floor[Length[#]/2]], PalindromeQ[#]] &@ IntegerDigits[#, 2] &] (* Michael De Vlieger, Nov 08 2017 *) CROSSREFS Cf. A165784, A240602. Sequence in context: A029514 A061950 A166093 * A261646 A303027 A217615 Adjacent sequences: A165782 A165783 A165784 * A165786 A165787 A165788 KEYWORD base,nonn AUTHOR Leroy Quet, Sep 26 2009 EXTENSIONS Extended by Ray Chandler, Mar 12 2010 New definition from Lior Manor, May 27 2014 Edited by N. J. A. Sloane, May 30 2014 STATUS approved

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Last modified December 1 18:55 EST 2022. Contains 358475 sequences. (Running on oeis4.)