

A171742


First 4fold intrinsically npalindrome (given in base ten).


22




OFFSET

2,1


COMMENTS

Given the size of the first 3fold 6palindrome (13 baseten digits; see A171705 or A171741), a fifth term is going to be difficult.


LINKS

Table of n, a(n) for n=2..5.


EXAMPLE

a(2)=24 is 11 in base 23, 22 in base 11, 33 in base 7 and 44 in base 5.
a(3)=300 is 1A1 in base 13, 363 in base 9, 454 in base 8 and 606 in base 7.


CROSSREFS

Cf. A171701, A171702, A171703, A171704, A171705, A171706, A171740, A171741.
Sequence in context: A206002 A000552 A233876 * A187851 A125436 A096821
Adjacent sequences: A171739 A171740 A171741 * A171743 A171744 A171745


KEYWORD

more,hard,nonn,base


AUTHOR

James G. Merickel, Dec 17 2009


STATUS

approved



