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A228242 First occurrence of n consecutive n's in the decimal expansion of log(2). 0

%I #14 Aug 21 2013 04:32:04

%S 4,419,2114,3929,38451,716837,6180096,10680693,2539803904

%N First occurrence of n consecutive n's in the decimal expansion of log(2).

%C Earls sequence for log(2).

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/NaturalLogarithmof2Digits.html">Natural Logarithm of 2 Digits</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/EarlsSequence.html">Earls Sequence</a>

%e log(2) = 0.6931471806...7229..., so

%e a(1) = 4 (the digit string 1 first occurs at position 4)

%e a(2) = 419 (the digit string 22 first occurs starting at position 419)

%Y Cf. A002162 (decimal expansion of log(2)).

%K nonn,base

%O 1,1

%A _Eric W. Weisstein_, Aug 17 2013

%E a(9) = 2539803904 from _Eric W. Weisstein_, Aug 20 2013

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Last modified April 16 00:00 EDT 2024. Contains 371696 sequences. (Running on oeis4.)