109888
domain: N
Appears in sequences
- Numbers k such that 103*2^k+1 is prime.at n=18A032401
- a(n) = that n-digit number m which gives minimal integral value of m/(sum of digits of m); in case of a tie pick the smallest.at n=5A034727
- Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,0,1,1,1 for x=0,1,2,3,4.at n=14A197244
- The numbers k for which gcd(k, phi(k)) + gcd(k, tau(k)) = gcd(k, sigma(k)).at n=14A326416