612500domain: NAppears in sequencesTriangular array: the fusion of polynomial sequences P and Q given by p(n,x)=(x+2)^n and q(n,x)=(x+2)^n.at n=41A193726Mirror of the triangle A193726.at n=39A193727Integers k such that k = Sum k/(p_i + j), where p_i are the prime factors of k (with multiplicity). Case j = -3.at n=14A380923