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%I #5 Jul 11 2015 00:51:57
%S 0,2,4,5,6,10,15,17,20,25,30,33,34,41,42,50,51,58,59,65,67,68,75,76,
%T 84,85,92,93,101,102,105,109,110,118,125,126,130,145,150,165,170,185,
%U 190,195,210,215,230,235,250,255,257,260,275,280,289,295,300,315,320,321
%N In base 4, numbers n of the form k + reverse(k) for at least one k.
%C Base-4 analog of A067030. Complement of A091679.
%e 25 is a term since 25 (decimal) = 121 = 110 + 011 = 20 (decimal) + 5 (decimal).
%Y Cf. A035524, A091679, A067030.
%K base,easy,nonn
%O 0,2
%A _Klaus Brockhaus_, Jan 28 2004
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