%I #13 May 29 2023 02:26:37
%S 0,0,0,0,0,1,1,3,7,18,42,109,269,691,1759,4542,11733,30559,79743,
%T 209136,549959,1451178,3838925,10182703,27069940,72121696,192527888,
%U 514908269,1379454526,3701556642,9947456861,26770280299,72138803942
%N Duplicate of A000633.
%Y Cf. A000599, A000600.
%K nonn,dead
%O 0,8
%A _N. J. A. Sloane_