87570
domain: N
Appears in sequences
- Least positive integer k such that k*n+1 = prime(p) and k^2*n+1 = prime(q) for some pair of primes p and q.at n=58A261437
- Triangle: Newton expansion of C(n,m)^3, read by rows.at n=40A262704
- Diagonal of the rational function 1/(1 - (wxz + wy + wz + xy + xz + y + z)).at n=4A274786
- a(n) = Sum_{k=1..n} mu(k)*k^5.at n=9A336279