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%I #8 Mar 18 2024 12:50:39
%S 16,4096,1152921504606846976,
%T 7237005577332262213973186563042994240829374041602535252466099000494570602496
%N 2^(2p - 1)/2, where p is a Mersenne prime A000668(n).
%C a(5) has 4931 digits and is too large to include. - _R. J. Mathar_, May 30 2008
%F a(n) = 2^(2*A000668(n)-1)/2.
%Y Cf. A000668, A139286, A139294, A139295, A139297, A139298, A139299, A139300, A139301, A139302, A139303, A139304, A139305, A139306.
%K nonn
%O 1,1
%A _Omar E. Pol_, Apr 13 2008
%E One more term from _R. J. Mathar_, May 30 2008
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