

A217146


Numbers palindromic in 5 digits in at least 4 different (large) bases.


2



4838419019, 6675709063, 13663698049, 41876599051, 45040065175, 97958718154, 152621159077, 159012936244, 269879465085, 524268472566, 586808622629, 631698774527, 866429089209, 914610285001, 938951012161, 1033860873698, 1327428637553, 1372403843311, 1683900384894
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


COMMENTS

This sequence is generated in pursuit of the 5th term for the crossreferenced sequence. The bases that create 5digit palindromes for each of the terms shown are:
{91, 125, 144, 161},
{113, 130, 131, 150},
{139, 149, 174, 349},
{148, 193, 390, 450},
{162, 289, 306, 336},
{194, 351, 534, 558}, and
{208, 284, 424, 443}.


LINKS

Hiroaki Yamanouchi, Table of n, a(n) for n = 1..52


EXAMPLE

The number 4383419019 (in base 10) becomes
a) (50)(70)(59)(70)(50) when put in base 91,
b) (19)(102)(33)(102)(19) in base 125,
c) (11)(36)(54)(36)(11) in base 144, and
d) 7(32)(61)(32)7 in base 161.


CROSSREFS

Cf. A171704.
Sequence in context: A224472 A015384 A233615 * A072018 A227799 A216013
Adjacent sequences: A217143 A217144 A217145 * A217147 A217148 A217149


KEYWORD

nonn,base


AUTHOR

James G. Merickel, Sep 27 2012


EXTENSIONS

a(8) added by James G. Merickel, Dec 09 2012
Terms sorted and added missing a(6) and a(9)a(19) by Hiroaki Yamanouchi, Aug 22 2015


STATUS

approved



