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%I #4 Sep 08 2013 13:30:44
%S 1,1,0,1,1,1,1,1,0,0,1,0,1,1,1,0,1,1,1,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,
%T 1,1,0,0,1,1,0,1,0,1,0,1,1,1,1,0,0,1,1,0,0,1,1,0,1,1,1,1,0,1,1,1,1,1,
%U 0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,1,1,0,0,0,1,1,0,0
%N First difference of binary numbers in A108787.
%e 1, 10, 11, 11, 100, 101, 110, 111, 1000, 1000, 1000, 1001, 1001, ... <- A108787
%e ..1..1..0..1..1..1..1..1..0..0..1..0... <- first difference are this sequence
%Y Cf. A108787, A108789, A108790.
%K base,easy,nonn
%O 1,1
%A _Philippe Deléham_, Jul 09 2005
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