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%I #21 Apr 21 2024 09:59:32
%S 0,0,0,0,0,0,0,0,0,1,3,5,6,9,10,15,19,23,33,45,55,69,95,130,162,214,
%T 290,375,483,656,864,1118,1446,1874,2437,3130,4058,5188,6642,8521,
%U 11002,14236,18400,23631,30521,39376,50685,65590,84817,109857,141892,183507,237217,307278,398506,517446,672105,873109,1136472,1479525,1927138,2513234,3278553,4279356
%N Number of Carmichael numbers (A002997) less than 2^n.
%H Amiram Eldar, <a href="/A225005/b225005.txt">Table of n, a(n) for n = 1..73</a> (terms 65..69 added using A182490; terms 70..73 calculated using data from Claude Goutier)
%H Jan Feitsma, <a href="https://web.archive.org/web/20220921163531/http://www.janfeitsma.nl/math/psp2/statistics">The pseudoprimes below 2^64 - statistics</a>. [Wayback Machine link]
%H Jan Feitsma and William Galway, <a href="http://www.cecm.sfu.ca/Pseudoprimes/index-2-to-64.html">Tables of pseudoprimes and related data</a>.
%H Claude Goutier, <a href="http://www-labs.iro.umontreal.ca/~goutier/OEIS/A055553/">Compressed text file carm10e22.gz containing all the Carmichael numbers up to 10^22</a>.
%Y Cf. A002997, A055553, A208276, A108797.
%Y Partial sums of A182490.
%K nonn,changed
%O 1,11
%A _Max Alekseyev_, Apr 23 2013
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