2002867877

Appears in sequences

• Second prime factor of x = 3^p - 2^p when p is prime and omega(x) >= 2.at n=4A089163
• List of primitive prime divisors of the numbers 3^n-2^n (A001047) in their order of occurrence.at n=28A129734
• Number of n X n 0..2n-2 arrays with upper left zero and lower right 2n-2 and each element differing from its horizontal and antidiagonal neighbors by one or two.at n=4A265459
• Number of nX5 0..n+5-2 arrays with upper left zero and lower right n+5-2 and each element differing from its horizontal and antidiagonal neighbors by one or two.at n=4A265463
• T(n,k)=Number of nXk 0..n+k-2 arrays with upper left zero and lower right n+k-2 and each element differing from its horizontal and antidiagonal neighbors by one or two.at n=40A265466
• Number of 5Xn 0..5+n-2 arrays with upper left zero and lower right 5+n-2 and each element differing from its horizontal and antidiagonal neighbors by one or two.at n=4A265470
• a(n) are the denominators corresponding to A370823(n).at n=22A370824