254329

Properties

Appears in sequences

• Number of (w,x,y,z) with all terms in {1,...,n} and w*x>3*y*z.at n=32A211918
• Odd numbers m such that for all 2^k < m the numbers m + 2^k, m - 2^k, m*2^k + 1, and m*2^k - 1 are composite, with k >= 1.at n=33A256163
• Primes p such that for all 2^k < p the numbers p + 2^k, p - 2^k, p*2^k + 1, and p*2^k - 1 are composite.at n=16A256237
• Number of nX6 0..1 arrays with every element equal to 0, 1, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=12A302678
• Prime numbersat n=22387