731016domain: NAppears in sequencesa(n) = p*(p + 1)*(2*p + 1) where p is the n-th prime.at n=19A098996Area of the unique primitive Pythagorean triple (a,b,c) such that (a-b+c)/2 = A002378(n) and its long leg and hypotenuse are consecutive natural numbers.at n=8A385187