562582020domain: NAppears in sequencesSmallest p for which there are exactly n primitive Pythagorean triangles with perimeter p; i.e., smallest p such that A070109(p) = n.at n=12A078928Least k such that Sum_{i=0..n} k^i / i! is a positive integer.at n=30A332734Numbers k such that omega(k) = 9.at n=24A348073