This site is supported by donations to The OEIS Foundation.



Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A171704 The first n-fold intrinsically 5-palindrome (represented in base ten). 25


%S 17,2293,267140,4838419019

%N The first n-fold intrinsically 5-palindrome (represented in base ten).

%C The fourth term, which is first 5-palindromic in base 91, is almost a concatenation of base-ten 5-palindromes.

%C A217146 gives the sequence of values 5-palindromic in at least 4 bases. The search there indicates a fifth term here has first base of 5-palindromicity above 200. - _James G. Merickel_ Oct 19 2012

%C a(5) > 10^14. - _Hiroaki Yamanouchi_, Aug 22 2015

%e a(2)=2293 is 33133 in base 5 and 14341 in base 6;

%e a(3)=267140 is 6D4D6, 54245 and 29E92 in bases 14, 15 and 18, respectively.

%Y Cf. A171701, A171702, A171703, A171705, A171706, A171740, A171741, A171742 A217146.

%K nonn,more,base

%O 1,1

%A _James G. Merickel_, Dec 17 2009

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

License Agreements, Terms of Use, Privacy Policy .

Last modified December 7 21:06 EST 2016. Contains 278895 sequences.