This sequence gives the first value (represented in base 10) that is palindromic -- i.e., the same when its digits are reflected about the center -- with n >= 1 digits in two different bases.
Currently waiting on doubly 18-palindrome. The 19-palindrome is one in bases 10 and 11, 6411682614162861146 in base 10. For some time I was laboring under the impression that the new terms now added -- starting at 9-palindromes -- were too difficult to find, thinking a change I recently made would not increase programming efficiency as much as it did. The results come from the research done for the sequences labeled with A216*** shown below. The other cross-referenced sequences, A171***, deal with higher orders of multiplicity and such things. - James G. Merickel, Sep 19 2012
