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a(n) = sum of the numbers between the two n's in A026346.
0

%I #4 Mar 30 2012 18:56:06

%S 0,7,17,23,47,69,107,153,171,211,274,298,372,430,460,551,621,657,765,

%T 881,969,1099,1147,1247,1394,1549,1606,1724,1896,1959,2142,2333,2475,

%U 2547,2755,2909,3131,3361,3445,3617,3864,3954

%N a(n) = sum of the numbers between the two n's in A026346.

%K nonn

%O 1,2

%A _Clark Kimberling_