1875530

Appears in sequences

• Numbers k such that core(k) = ceiling(sqrt(k)) where core(k) is the squarefree part of k (the smallest integer such that k*core(k) is a square).at n=34A069187
• Numbers k such that core(k) is equal to the sum of the proper square divisors of k, where core(k) = A007913(k).at n=21A225882
• Numbers of the form p^2 * (p^2 + 1) where p is in A225856.at n=10A225892