403139914489domain: NAppears in sequencesTriangular array read by rows: T(n, k) = prime(n+1)^k * prime(n)^(k*(k-1)/2) with T(0,0) = 1.at n=25A133397Least number that is not divisible by 5 and the sum of two positive squares in exactly n ways.at n=16A274466