A075533 - OEIS

%I #6 Mar 30 2012 17:37:12

%S 1,2,0,12,0,0,840,0,0,50400,831600,0,0,302702400,1135134000,

%T 14529715200,0,2315673360000,15545887156800,140792940288000,

%U 443497761907200,28006062372288000,623360743125120000

%N Number of labeled rooted trees where each node at height h has 0 or h+1 children.

%H <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a>

%Y Cf. A075532, A075534.

%K nonn

%O 1,2

%A _Christian G. Bower_, Sep 19 2002