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Duplicate of A004526.
0

%I #17 Nov 24 2017 06:24:22

%S 0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,

%T 15,15,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,

%U 26,27,27,28,28,29,29,30,30,31,31,32,32,33,33,34,34

%N Duplicate of A004526.

%K dead

%O 1,4

%A _Amarnath Murthy_, Oct 19 2002