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a(n) = sum of the numbers between the two n's in A026350.
0

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

%S 0,4,8,17,29,38,55,67,89,114,131,161,194,216,254,279,322,368,398,449,

%T 482,538,597,635,699,766,809,881,927,1004,1084,1135,1220,1308,1364,

%U 1457,1516,1614,1715,1779,1885,1952,2063,2177,2249

%N a(n) = sum of the numbers between the two n's in A026350.

%K nonn

%O 2,2

%A _Clark Kimberling_