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A165784 a(1)=1. For n >= 2, each a(n) = the decimal equivalent of either 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. 1
1, 5, 7, 85, 93, 119, 127, 21845, 21973, 23901, 24029, 30583, 30711, 32639, 32767, 1431655765, 1431688533, 1440044501, 1440077269, 1566399837, 1566432605, 1574788573, 1574821341, 2004318071, 2004350839, 2012706807, 2012739575 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Each term is a palindrome when written in base 2.

LINKS

Table of n, a(n) for n=1..27.

CROSSREFS

Cf. A165785

Sequence in context: A067198 A062583 A196139 * A176619 A230379 A292847

Adjacent sequences:  A165781 A165782 A165783 * A165785 A165786 A165787

KEYWORD

base,nonn

AUTHOR

Leroy Quet, Sep 26 2009

EXTENSIONS

More terms from Sean A. Irvine, Dec 03 2009

STATUS

approved

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Last modified September 24 22:27 EDT 2018. Contains 315360 sequences. (Running on oeis4.)