55888

Appears in sequences

• Expansion of (1-2*x)/(1-4*x-2*x^2+4*x^3).at n=8A052978
• Sum of the elements in the coprime subsets of the integers 1 to n.at n=17A087081
• T(n,k) = number of ways to reciprocally link elements of an n X k array either to themselves or to exactly one king-move neighbor.at n=37A220644
• T(n,k) = number of ways to reciprocally link elements of an n X k array either to themselves or to exactly one king-move neighbor.at n=43A220644
• Number of ways to reciprocally link elements of an n X 8 array either to themselves or to exactly one king-move neighbor.at n=2A243314
• Numbers k with digits 5 and 8 only.at n=37A284381
• G.f. satisfies A(x) = (1+x*A(x)^3)/(1-x)^2.at n=6A364629
• Number of fixed tree-like polyedges on the square lattice with n edges, rooted at a vertex.at n=7A385120