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

Offset: 1

Author

James G. Merickel, Sep 19 2012

Keywords

• nonn
• base

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.

Examples

			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.

Extensions

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