62162

Appears in sequences

• Number of unlabeled distributive lattices on n nodes.at n=22A006982
• a(n) = (n-2)*a(n-2) - a(n-3), with a(0)=0, a(1)=1, a(2)=2.at n=14A122048
• Number of (w,x,y,z) with all terms in {0,...,n} and (least gapsize)>1.at n=17A212897