51608

Appears in sequences

• Number of dissections of a convex polygon by nonintersecting diagonals into polygons with even number of sides and having a total number of n edges (sides and diagonals).at n=21A067955
• Smallest of 5 consecutive integers divisible respectively by 5 consecutive primes.at n=27A072730
• Prime(a(n)) + ... + prime(a(n)+3) is a square = A051395(n)^2.at n=35A072849
• Numbers k such that 5*10^k - 81 is prime.at n=26A281512
• Refactorable numbers (A033950) which set a record for the gap to the next refactorable number.at n=10A343817