228528

Appears in sequences

• Non-perfect powers k for which q = A051903(k)/A051904(k) is an integer, A051904(k) > 1.at n=28A093770
• If p and q are twin primes then pq + 1 is always divisible by 3, except for (p,q)=(3,5). Sequence gives values of (pq + 1)/3.at n=31A165280
• Numbers with prime factorization p^2*q^3*r^4 where p, q, and r are distinct primes.at n=21A190115
• Number of chordless cycles in the complete tripartite graph K_{n,n,n}.at n=23A297662
• Conductor of the elliptic curve y^2 = x^3 + n.at n=22A356730
• Primitive terms of A388022: numbers k that satisfy sigma(k) AND 3*k = 3*k, but none of whose proper divisors satisfy the same condition.at n=36A388025