login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A305470 Smallest binary palindrome whose product with A305468(n) gives a binary palindrome. 1

%I

%S 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,

%T 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,

%U 153,1,7,5,3,255,3,1,5,13299,15,1,255,3,17,15,1,1,51

%N Smallest binary palindrome whose product with A305468(n) gives a binary palindrome.

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

%Y Cf. A006995, A305468.

%K nonn,base

%O 1,6

%A _Jeffrey Shallit_, Jun 02 2018

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 24 02:05 EDT 2021. Contains 346269 sequences. (Running on oeis4.)