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A161514 Number of digits in n-th even perfect number written in base 8. 2


%S 1,2,3,5,9,11,13,21,41,59,71,85,347,405,853,1469,1521,2145,2835,2949,

%T 6459,6627,7475,13291,14467,15473,29665,57495,73669,88033,144061,

%U 504559,572955,838525,932179,1984147,2014251,4648395,8977945,13997341,16024389,17309967,20268305,21721771,24771111,28429201,28741739

%N Number of digits in n-th even perfect number written in base 8.

%C Or number of digits in A161323(n), assuming that all perfect numbers are even.

%H Ivan Panchenko, <a href="/A161514/b161514.txt">Table of n, a(n) for n = 1..47</a>

%Y Cf. A000396, A161323.

%K nonn,base

%O 1,2

%A _Juri-Stepan Gerasimov_, Jun 12 2009

%E Definition changed (inserting the word "even"), a(12) and a(27) corrected and a(40)-a(45) added by _Ivan Panchenko_, Aug 06 2018

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Last modified February 26 17:19 EST 2020. Contains 332293 sequences. (Running on oeis4.)