215656442

Appears in sequences

• Smallest x > 1 such that x^prime(n) == 1 mod(prime(i)) 4<=i<=n.at n=6A071556
• Triangle read by rows: T(n,k) = (A002110(n) + A002110(k)) / A002110(k), 1 <= k <= n.at n=47A370135