352495

Appears in sequences

• Positive integers n such that n^2 = (x^4 - y^4)*(z^4 - t^4) where x>y and z>t are distinct pairs of integers with gcd(x,y)=gcd(z,t)=1.at n=23A147856
• Composite squarefree numbers that are multiples of the root mean square of their prime factors.at n=17A255356
• Composite squarefree numbers k = Product_{i} p_i such that k^2 is divisible by Sum_{i} p_i^2.at n=11A332738