115290

Appears in sequences

• Triangle of the numbers of different forests of m unrooted trees of smallest order 2, i.e., without isolated vertices, on N labeled nodes.at n=38A105786
• a(n) = Sum_{k=0..floor(n/4)} 2^k * 3^(n-3*k) * binomial(n-3*k+6,6) * binomial(2*(n-3*k),2*k).at n=5A391724