58851

Appears in sequences

• Number of ordered triples (i,j,k) with |i| + |j| + |k| <= n and gcd(i,j,k) <= 1.at n=37A100450
• n+prime(n)+prime(prime(n)) is a triangular number, where prime(n) is the n-th prime.at n=28A116010
• Partial sums of A006000.at n=25A133252
• a(n) = n*(n+1)*(20*n-17)/6.at n=26A172117