330041

Properties

Appears in sequences

• Numbers k such that 2*10^k + R_k + 6 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=8A102949
• Number of n X n X n 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,3,2,0,1,1,0 for x=0,1,2,3,4,5,6.at n=5A197898
• Prime numbersat n=28408