190471

Properties

Appears in sequences

• a(n) = least prime P(n) such that P(n)-2*p(n) is prime and P(n+1)>P(n) with p(n)=n-th prime.at n=10A115972
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 1), (-1, 1, -1), (1, 0, 1), (1, 1, -1)}.at n=10A149221
• a(n) is the smallest n-isolated prime, or a(n)=0 if there are no n-isolated primes.at n=33A218275
• a(0) = 3, then a(n) is the least prime greater than a(n-1) that follows a gap of exactly 2*n.at n=31A253899
• Prime numbersat n=17201