118472

Appears in sequences

• (Number of primes == 3 mod 4 less than 10^n) - (number of primes == 1 mod 4 less than 10^n).at n=12A091295
• Number of n X 3 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor.at n=3A221121
• T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor.at n=18A221125
• Number of 4Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor.at n=2A221128