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a(n) = (1/4)*s(n), where s(n) is the n-th multiple of 4 in A026142.
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%I #4 Mar 30 2012 18:56:05

%S 1,2,3,5,6,8,9,11,4,14,15,17,18,20,7,23,24,26,27,29,10,32,33,35,12,38,

%T 13,41,42,44,45,47,16,50,51,53,54,56,19,59,60,62,21,65,22,68,69,71,72,

%U 74,25,77,78,80,81,83,28,86,87,89,30,92,31

%N a(n) = (1/4)*s(n), where s(n) is the n-th multiple of 4 in A026142.

%K nonn

%O 1,2

%A _Clark Kimberling_