207797

Properties

Appears in sequences

• Primes p such that p,q,r,s are consecutive primes and 2p+9, 2q+9, 2r+9, 2s+9 are also primes.at n=28A190354
• Sum of the j-th number with binary weight n-j+1 over all j in [n].at n=16A361074
• a(n) is the number of n-celled snake polyominoes in the {4,5} tessellation of the hyperbolic plane.at n=14A390196
• Prime numbersat n=18618