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A216901 Smallest palindromic number of 7 digits in two bases differing by n. 16
186621, 532900, 1857351, 9046409, 17439233, 69012421, 146766357, 289744476, 347411351, 390219121, 1200809057, 1393838392, 3088676989, 2383346701, 3333147809, 6041072349, 6819663132, 7822398453, 9534770061, 12359264257, 18701296795, 20196246357, 25763014657 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
See comments to A216840 and A216841. Smaller of pair of bases are 6, 7, 8, 10, 11, 14, 15, 17, 17, 17. The A216*** cross-references here are other sequences of this collection, while the A171*** ones are to various multi-base record palindromes.
LINKS
EXAMPLE
9046409 is also a 7-digit palindrome in base 14 (in addition to decimal). No smaller number is a 7-digit palindrome in both of two bases that differ by 4.
CROSSREFS
Sequence in context: A186878 A192103 A203442 * A253293 A253163 A185775
KEYWORD
nonn,base
AUTHOR
James G. Merickel, Sep 19 2012
EXTENSIONS
More terms from Chai Wah Wu, Aug 16 2015
STATUS
approved

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Last modified July 15 08:33 EDT 2024. Contains 374324 sequences. (Running on oeis4.)