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%I #3 Jun 27 2012 13:58:42
%S 1,11,11011,1101100011111,1101100011011000001101111011011,
%T 110110001101100000110110001101100000000001111111011111110001111111111111,
%U 110110001101100000110110001101100000000001101100011011000001101100011011000000000000110110001101111011110110111101111011000111111100011011111111101111111011
%N Bit-masks of A068222 shown in binary.
%Y The width of central gap of the term a(n) (n>1)= 0, 1, 3, 5, 10, 12, ... is given by A068059(n-1)-1. Cf. A068223, A068739.
%K nonn
%O 1,2
%A _Antti Karttunen_, Feb 26 2002