

A171702


The first number that is (at least) nfold intrinsically 3palindromic (represented in base ten).


25



5, 26, 121, 300, 1009, 1477, 4591, 15049, 35101, 35101, 83161, 176401, 291721, 291721, 720721, 1081081, 1496881, 2106721, 3341521, 3341521, 5654881, 7207201, 8648641, 10810801, 13693681, 15135121, 21621601, 28274401, 28274401, 41081041, 41081041, 41081041
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OFFSET

1,1


LINKS

Giovanni Resta, Table of n, a(n) for n = 1..100 [terms a(1)a(38) computed by Hiroaki Yamanouchi; a(39)a(100) by Giovanni Resta, Apr 22 2016]


EXAMPLE

a(1)=5 is 101 in base 2.
a(2)=26 is 222 in base 3 and 101 in base 5.
a(3)=121 is 232 in base 7 and 171 in base 8.


CROSSREFS

Cf. A171701, A171703, A171704, A171705, A171706, A171740, A171741, A171742.
Sequence in context: A211606 A005499 A185552 * A254825 A272123 A285905
Adjacent sequences: A171699 A171700 A171701 * A171703 A171704 A171705


KEYWORD

nonn,base


AUTHOR

James G. Merickel, Dec 15 2009


EXTENSIONS

a(21)a(32) from Hiroaki Yamanouchi, Sep 20 2014


STATUS

approved



