

A171704


The first nfold intrinsically 5palindrome (represented in base ten).


25




OFFSET

1,1


COMMENTS

The fourth term, which is first 5palindromic in base 91, is almost a concatenation of baseten 5palindromes.
A217146 gives the sequence of values 5palindromic in at least 4 bases. The search there indicates a fifth term here has first base of 5palindromicity above 200.  James G. Merickel Oct 19 2012
a(5) > 10^14.  Hiroaki Yamanouchi, Aug 22 2015


LINKS

Table of n, a(n) for n=1..4.


EXAMPLE

a(2)=2293 is 33133 in base 5 and 14341 in base 6;
a(3)=267140 is 6D4D6, 54245 and 29E92 in bases 14, 15 and 18, respectively.


CROSSREFS

Cf. A171701, A171702, A171703, A171705, A171706, A171740, A171741, A171742 A217146.
Sequence in context: A001905 A221322 A135505 * A198288 A092814 A198594
Adjacent sequences: A171701 A171702 A171703 * A171705 A171706 A171707


KEYWORD

nonn,more,base


AUTHOR

James G. Merickel, Dec 17 2009


STATUS

approved



