136949

Properties

Appears in sequences

• Number of convex polygons of length 2n on square lattice whose leftmost bottom vertex is strictly to the right of the rightmost top vertex.at n=6A005769
• Primes p such that p+2, 2p+1, and 2p+3 are also prime.at n=33A069142
• Primes p such that 2^j+p^j are primes for j=0,1,4,32.at n=4A094489
• Primes p such that p^2 - p - 1, p^3 - p - 1 and p^4 - p - 1 are all prime.at n=12A236173
• Numbers n such that n is a twin prime and 2n + 1 is a twin prime.at n=34A261463
• Prime numbersat n=12753