46027

Properties

Appears in sequences

• Largest prime factor of product of first n primes - 1, or 1 if no such prime exists.at n=8A002584
• Number of ordered triples (a, b, c) with gcd(a, b, c) = 1 and 1 <= {a, b, c} <= n.at n=37A071778
• A129957(n) - n*(n-1)/2.at n=36A129959
• Number of ways to reciprocally link elements of an n X 3 array either to themselves or to exactly two horizontal, vertical or antidiagonal neighbors.at n=5A220683
• Number of ways to reciprocally link elements of an nX6 array either to themselves or to exactly two horizontal, vertical or antidiagonal neighbors.at n=2A220686
• T(n,k)=Number of ways to reciprocally link elements of an nXk array either to themselves or to exactly two horizontal, vertical or antidiagonal neighbors.at n=30A220688
• T(n,k)=Number of ways to reciprocally link elements of an nXk array either to themselves or to exactly two horizontal, vertical or antidiagonal neighbors.at n=33A220688
• Numerators of upper primes-only best approximates (POBAs) to sqrt(8); see Comments.at n=12A265792
• Prime numbersat n=4763