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%I #3 Oct 19 2017 03:15:01
%S 0,1,2,3,4,7,8,15,16,127,128,255,256,32767,32768,65535,65536,
%T 2147483647,2147483648,4294967295,4294967296,9223372036854775807,
%U 9223372036854775808,18446744073709551615,18446744073709551616
%N Numbers of the form 2^(2^n-1)-1, 2^(2^n-1), 2^(2^n)-1, 2^(2^n).
%C The values are important in binary computer arithmetic.
%Y Cf. A001146, A051179, A058891, A077585.
%K nonn
%O 1,3
%A Henrik Lundquist (sploinker(AT)sploink.dk), Mar 30 2006
%E Edited by _Don Reble_, Mar 31 2006
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