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%I #2 Mar 31 2012 13:21:56

%S 0,1,1,3,3,9,9,18,24,38,46,73,89,129,168,223,281,379,472,619,780,992,

%T 1233,1567,1938,2424,2992,3706,4537,5596,6812,8333,10123,12294,14859,

%U 17965,21601,25997,31161,37322,44543,53162,63219,75155

%N A000041(n)-A000010(n).

%Y Cf. A000010, A000041.

%K nonn

%O 1,4

%A _Jon Perry_, Jul 29 2003