59968

Appears in sequences

• Number of enriched p-trees of weight n.at n=11A289501
• Number of surviving (but not bifurcating) nodes at generation n in the binary tree of persistently squarefree numbers (see A293230).at n=38A293521
• Number of tree-partitions of a multiset whose multiplicities are the prime indices of n.at n=30A318847
• G.f. A(x) satisfies 2 = Sum_{n=-oo..+oo} x^(2*n) * (A(x) - x^(2*n+1))^(n-1).at n=6A380065