541832

Appears in sequences

• Number of dyslexic rooted planar trees with n nodes where any 2 subtrees extending from a node are of different sizes.at n=18A032048
• a(0)=0, a(1)=0; for n>1, a(n) = a(n-1) + (n+3)*a(n-2) + 1.at n=12A220700