A216905 - OEIS

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A216905

Smallest palindromic number of 11 digits in two bases differing by n.

1556085529, 28455496928, 671667243106, 6286726505905, 17441819065567, 96396891300626, 470389217692631, 899379244450606, 2169311631182347, 6355119734595765, 11642138005593761, 28921424479420089, 55584853414001304, 183094184161456101

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

See comments in A216840 and A216841. Smaller of pair of bases are 7, 9, 12, 15, 16, 19, 22, 23, 25, 28. The A216*** sequences in cross-reference are others in the collection including this one, while A171*** sequences are various record multi-base palindromes.

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

The first term is 53363336335 in base 7 and is 13457775431 in base 8.

CROSSREFS

Cf. A171701, A171702, A171703, A171704, A171705, A171706, A171740, A171741, A171742, A171775, A216840, A216841, A216843, A216899, A216900, A216901, A216902, A216903, A216904, A216906, A216907, A216908, A216909, A216910.

Sequence in context: A276820 A273815 A258885 * A166383 A227444 A329463

Adjacent sequences: A216902 A216903 A216904 * A216906 A216907 A216908

KEYWORD

nonn,base

AUTHOR

James G. Merickel, Sep 19 2012

EXTENSIONS

a(11)-a(14) from Chai Wah Wu, Aug 19 2015

STATUS

approved