67215

Appears in sequences

• Numbers k such that k-4, k-2, k+2 and k+4 are prime.at n=28A173037
• Numbers n such that n+/-2 and n^2+/-2 are all primes.at n=27A189051
• Numbers k such that {k + 2, k + 4} and {k^2 + 2, k^2 + 4} are both twin prime pairs.at n=31A284014
• Number of nX4 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s.at n=6A297540
• T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s.at n=51A297544
• Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s.at n=3A297550