47943domain: NAppears in sequencesNumbers n such that n^2 + 1 is divisible by a 5th power.at n=30A218564Numbers k such that k^2 + 1 is divisible by a 6th power.at n=6A218565Numbers n such that the product of proper divisors of n ends with n and n is not a multiplicatively perfect number (A007422).at n=19A278474