A026251 - OEIS

%I #4 Mar 30 2012 18:56:05

%S 2,4,2,6,8,4,10,12,14,6,16,18,8,20,22,24,10,26,28,12,30,32,14,34,36,

%T 38,16,40,42,18,44,46,48,20,50,52,22,54,56,24,58,60,62,26,64,66,28,68,

%U 70,72,30,74,76,32,78,80,82,34,84,86,36,88,90

%N a(n) = |s(n) - n|, where s = A026250. Also a(n) = 2*t(n), where t = A026249.

%K nonn

%O 1,1

%A _Clark Kimberling_