101573

Properties

Appears in sequences

• Number of nX3 0..3 arrays with exactly floor(nX3/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.at n=3A223049
• T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.at n=18A223052
• a(n) = prime(2^(n-1)*(2*n-1)), n >= 1.at n=9A264735
• Primes that can be generated by the concatenation in base 8, in descending order, of two consecutive integers read in base 10.at n=31A287311
• Prime numbersat n=9728