52953

Appears in sequences

• Numbers n such that Lucas(prime(n)) is prime, where Lucas = A000032.at n=56A120561
• Numbers n such that the sum of the prime distinct divisors of n^2+1 equals 2 times the difference between the largest and the smallest prime divisor.at n=7A200071
• Least number x such that x^n has n digits equal to k. Case k = 3.at n=28A285450
• Number of 5-element subsets of [n] whose sum is a triangular number.at n=36A320851
• Partial sums of A334136.at n=45A332264