20362

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 85.at n=19A020424
• Composite numbers k such that phi(x) = psi(k)*phi(k) has no solution.at n=16A292714
• G.f.: Product_{m>0} (1 + x^m + 2!*x^(2*m) + 3!*x^(3*m) + 4!*x^(4*m) + 5!*x^(5*m)).at n=17A293250
• Number of pairs (lambda,mu) of partitions lambda of n and mu of five with mu <= lambda (by diagram containment).at n=22A303855
• Number of interval-closed sets in the root poset of type A(n).at n=6A367316