193260

Appears in sequences

• Numbers k such that prime(k) +/- k and prime(k) +/- 2k are all primes.at n=21A112530
• Number of nX3 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal.at n=3A207203
• T(n,k)=Number of nXk 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal.at n=18A207208
• Number of 4Xn 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal.at n=2A207210