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A217146
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Numbers palindromic in 5 digits in at least 4 different (large) bases.
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2
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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)
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OFFSET
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1,1
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COMMENTS
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This sequence is generated in pursuit of the 5th term for the cross-referenced sequence. The bases that create 5-digit 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}.
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LINKS
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Hiroaki Yamanouchi, Table of n, a(n) for n = 1..52
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EXAMPLE
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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.
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CROSSREFS
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Cf. A171704.
Sequence in context: A224472 A015384 A233615 * A072018 A227799 A216013
Adjacent sequences: A217143 A217144 A217145 * A217147 A217148 A217149
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KEYWORD
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nonn,base
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AUTHOR
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James G. Merickel, Sep 27 2012
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EXTENSIONS
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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
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STATUS
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approved
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