45733

Appears in sequences

• Number of rooted trees with n nodes and a single labeled node; pointed rooted trees; vertebrates.at n=12A000107
• Number of atoms in a decahedron with n shells.at n=38A004068
• G.f.: (x+4*x^3+x^5)/((1-x)^2*(1-x^2)^2*(1-x^3)).at n=37A083707
• Array read by ascending antidiagonals, A(m, n) = Sum_{k=1..m}(-1)^(k-n-m)* hypergeom([k, k-n-m], [], 1) for m>=1 and n>=0.at n=38A292898
• a(n) = Sum_{k=1..n} (-1)^(n-k)*hypergeom([k, k-2-n], [], 1).at n=6A293295
• Numbers k such that k + A067666(k) is a square.at n=38A386257