47827

Appears in sequences

• Denominators of continued fraction convergents to sqrt(331).at n=12A041625
• Numbers k such that k + sigma(k) and k + phi(k) are palindromes.at n=10A115900
• T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 nXk array.at n=46A220935
• Equals two maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 2Xn array.at n=8A220936
• T(n,k) = Equals two maps: number of n X k binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..3 n X k array.at n=46A221290
• Numbers k such that (28*10^k - 31)/3 is prime.at n=23A293280