116512

Appears in sequences

• Number of (w,x,y,z) with all terms in {1,...,n} and w^2>x^2+y^2+z^2.at n=31A212094
• Numbers k, excluding primes and squares of primes, such that gcd(k, numerator of H(k-1)) > 1, where the harmonic number H(j) = Sum_{i=1..j} 1/i.at n=6A228810