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Duplicate of A011946.
1

%I #44 Feb 10 2024 10:09:12

%S 1,2,3,8,15,30,63,128,252,510,1023,2040,4095,8190,16365,32768,65535,

%T 131040,262143,524280,1048509,2097150,4194303,8388480,16777200,

%U 33554430,67108608,134217720,268435455,536870370,1073741823,2147483648,4294966269,8589934590

%N Duplicate of A011946.

%K dead

%O 1,2