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%I #1 Jun 12 2004 03:00:00
%S 2,4,10,12,38,42,44,142,150,154,156,166,170,172,178,184,198,204,216,
%T 232,240,542,558,566,570,572,590,598,602,604,614,618,620,632,654,662,
%U 666
%N Numbers n with property that the binary cyclic right-rotating progressive sum of digits (see A091821) is exactly n/2.
%C There are large gaps in this sequence. For any n>=2 the number 2^2n - 2^n + 1 and the following 2^2n + 2^(n+1) - 3 natural numbers will definitely not occur in this sequence.
%Y Cf. A091821.
%K base,easy,nonn
%O 1,1
%A Frank Schwellinger (nummer_eins(AT)web.de), Mar 19 2004