99767

Properties

Appears in sequences

• Least prime in A031938 (lesser of primes differing by 20) whose distance to the next 20-twin is 6*n.at n=8A052359
• Number of ways to reciprocally link elements of an n X 2 array either to themselves or to exactly two king-move neighbors, without 3-loops.at n=8A220647
• T(n,k)=Number of ways to reciprocally link elements of an nXk array either to themselves or to exactly two king-move neighbors, without 3-loops.at n=46A220652
• Number of distinct values of the sum of 5 products of three 0..n integers.at n=27A225262
• a(n) = gpf(1 + Product_{k=0..4} prime(n+k)), where gpf is greatest prime factor and prime(i) is the i-th prime.at n=13A261210
• a(n) is the greatest prime > a(n-1) obtained by inserting a single digit anywhere in its string of digits (including at the beginning or end), starting with a(1) = 6.at n=4A389726
• Prime numbersat n=9572