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A305470 Smallest binary palindrome whose product with A305468(n) gives a binary palindrome. 1
1, 1, 1, 1, 1, 3, 5, 1, 1, 27, 1, 1, 1, 1, 5, 3, 1, 1, 63, 3, 9, 7, 1, 1, 765, 1, 3, 11253, 45, 1, 3, 1, 27, 1, 1, 21, 5, 1, 93, 1, 1, 27, 15, 39513, 7, 1, 3, 21, 45, 1, 3, 33, 63, 93, 3, 1, 153, 1, 7, 5, 3, 255, 3, 1, 5, 13299, 15, 1, 255, 3, 17, 15, 1, 1, 51 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Table of n, a(n) for n=1..75.

EXAMPLE

For n = 10 the corresponding term A305468(10) equals 19, and both a(10) = 27 and 27*19 = 513 are binary palindromes.

CROSSREFS

Cf. A006995, A305468.

Sequence in context: A074903 A091084 A016610 * A141707 A329593 A263490

Adjacent sequences:  A305467 A305468 A305469 * A305471 A305472 A305473

KEYWORD

nonn,base

AUTHOR

Jeffrey Shallit, Jun 02 2018

STATUS

approved

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Last modified June 21 23:37 EDT 2021. Contains 345367 sequences. (Running on oeis4.)