palindromes

N. J. A. Sloane njas at research.att.com
Fri May 4 21:22:32 CEST 2001


call a number N k-palindromic if there is a base b
such that N is a palindrome of length k in base b

this is the subject of 

http://xxx.lanl.gov/abs/math.GM/0105022

they show that all numbers are 1- and 2-palindromes,
most are 3- , while most are not 4- and higher k- palindromes

However, they do not seem to give examples.

My question to seq fans, many of whom are specialists
in palindromes, is : are the sequences of 3- , 4-, etc palindromic
numbers in the database?

neil sloane






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