115469

Properties

Appears in sequences

• Number of paraffins C_n H_{2n} X_2 with n carbon atoms.at n=13A000636
• Number of "polyares" of order n (turning over allowed).at n=8A057724
• Primes p such that p+2, 2p+1, and 2p+3 are also prime.at n=30A069142
• T(n,k) = Number of (n+2) X (k+2) 0..4 arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock.at n=23A186579
• T(n,k) = Number of (n+2) X (k+2) 0..4 arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock.at n=25A186579
• Numbers n such that n is a twin prime and 2n + 1 is a twin prime.at n=31A261463
• Integers k such that 28*phi(29*197^3*k) is not a totient number where phi is the totient function.at n=26A361396
• Prime numbersat n=10911