117959

Properties

Appears in sequences

• The number of distinct primes < 10^n which are members of twin-prime pairs.at n=6A167874
• Number of (n+1)X(n+1) 0..2 matrices with each 2X2 permanent equal.at n=2A225019
• Number of (n+1)X4 0..2 matrices with each 2X2 permanent equal.at n=2A225022
• T(n,k) is the number of (n+1) X (k+1) 0..2 matrices with each 2 X 2 permanent equal.at n=12A225027
• Number of (n+2)X(5+2) 0..3 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..3 introduced in row major order.at n=6A231438
• Number of (n+2)X(7+2) 0..3 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..3 introduced in row major order.at n=4A231440
• Numbers n such that A242720(n) = prime(n)*(prime(n)+4)+3 and A242719(n) - A242720(n) = 2*(prime(n)-1).at n=22A247279
• Prime numbersat n=11130