103429domain: NAppears in sequencesSmaller of consecutive values in A075407.at n=17A074888a(n) = 68*n^2 + 1.at n=39A158732Number k such that k^2 + 1 = p*q*r where p,q,r are distinct primes and the sum p+q+r is a perfect square.at n=26A261529