336141

Appears in sequences

• For each successive prime p, the largest integer n such that both n and n-1 factor into primes less than or equal to p.at n=6A117581
• Coordination sequence for 6-dimensional cyclotomic lattice Z[zeta_9].at n=17A126899
• Odd numbers k such that rad(k) divides sigma(k).at n=25A336554