2019171

Appears in sequences

• Number of (n+1)X(2+1) 0..2 arrays with each row nonprime and column prime, read as a base 3 number with top and left being the most significant digits.at n=5A262107
• T(n,k) = Number of (n+1) X (k+1) 0..2 arrays with each row nonprime and column prime, read as a base 3 number with top and left being the most significant digits.at n=26A262109