165964domain: NAppears in sequencesNumber of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 5,5,1,0,1,1,0 for x=0,1,2,3,4,5,6.at n=6A197966Numbers that can be represented as p^r + q^s with 4 distinct odd primes p, q, r, s.at n=25A390179