185354domain: NAppears in sequencesa(n)^2 + 1 is largest prime of the form x^2 + 1 <= 2^n.at n=34A083848Indices of primes in the sequence defined by A(0) = 49, A(n) = 10*A(n-1) - 81 for n > 0.at n=16A101715Index k of A007814(A000127(k)) at record terms.at n=10A364133