184138713

Appears in sequences

• Number of 9-ary trees.at n=8A059967
• Eighth column of triangle A062993 (without leading zeros). A Pfaff-Fuss or 9-Raney sequence.at n=8A062994
• a(n) = binomial(n*(n+1),n)/(n^2+1).at n=8A135862
• G.f. A(x) satisfies A(x) = 1 + x*A(x)^5*A(-x)^4.at n=16A143554