1800119

Properties

Appears in sequences

• Number of paths from (0,0) to (n,2), with vertices (i,k) satisfying 0 <= k <= 3, consisting of segments given by the vectors (1,1), (1,2), (1,-1).at n=23A247325
• Invertible primes p such that k*p - 1 and k*p + 1 is a twin prime pair; for k = 12.at n=24A317029
• Prime numbersat n=135080