127040domain: NAppears in sequencesNumbers n such that sopfr(n-1) | (n+sopfr(n+1)) and sopfr(n+1) | (n+sopfr(n-1)), where sopfr = A001414 (sum of prime factors with repetition).at n=9A196994Number of 4X4X4 triangular 0..n arrays with every horizontal row nondecreasing and having the same average value.at n=13A214908