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Smallest palindromic number of length 15 in two bases differing by n.
15

%I #8 Sep 28 2012 13:28:20

%S 4712469842177,14192598568359611,389035682624908873,

%T 11713091929744317938,110566060844648951845

%N Smallest palindromic number of length 15 in two bases differing by n.

%C See comments to A216840 and A216841. Smaller of pair of bases are 7, 12, 15, 19, 22. A216*** sequences in cross-reference are others in a collection including this one, while A171*** ones are various multi-base palindrome records.

%e The first term is 664315252513466 in base 7 and 104446505644401 in base 8.

%Y Cf. A171701, A171702, A171703, A171704, A171705, A171706, A171740, A171741, A171742, A171775, A216840, A216841, A216843, A216899, A216900, A216901, A216902, A216903, A216904, A216905, A216906, A216907, A216908, A216910.

%K nonn,base

%O 1,1

%A _James G. Merickel_, Sep 19 2012