70771domain: NAppears in sequencesNumerators of continued fraction convergents to sqrt(815).at n=9A042572a(1) = 25; for n > 1, a(n) is the smallest integer > 0 such that the concatenation a(n)a(n-1)...a(2)a(1) is a square.at n=5A065781a(n) = 4*p(n-1)*p(n+1) - p(n)^2, where p(k) = k-th prime.at n=34A327447