446865

Appears in sequences

• a(n) = n^2*binomial(n,2).at n=30A092364
• a(n) = (prime(n)^4 - prime(n)^3)/2.at n=10A138423
• Product_{i=0..3} (2^floor((n+i)/4)-1).at n=19A274627
• a(n) = Sum_{k=1..n^2, gcd(n,k) = 1} k.at n=30A308474