8392609domain: NAppears in sequencesPrime powers (A025475) such that the distance to the nearest prime power is a prime.at n=26A239522a(n) is the least perfect power > 2^n.at n=23A357751a(n) is the least square with n binary digits.at n=21A357753a(n) is the denominator of the square of the n-th Lagrange number.at n=15A382099