43655

Appears in sequences

• Quadruples of different integers from [ 1,n ] with no global factor.at n=33A015622
• a(n) is the smallest k such that number of non-unitary prime divisors of central binomial coefficient, A000984(k) = C(2*k,k) equals n.at n=35A081393
• Number of real singularities on a family of degree-3n algebraic surfaces.at n=15A200048
• Number of (n+1) X (7+1) 0..1 arrays with every 2 X 2 subblock ne-sw antidiagonal difference nondecreasing horizontally and nw+se diagonal sum nondecreasing vertically.at n=8A258553
• Number of points of norm <= n in the body-centered cubic lattice with the lattice parameter equal to 2/sqrt(3).at n=20A276648
• The number of domino stacks with n dominos.at n=19A390209