41780

Appears in sequences

• Numbers n such that n through n+6 are divisible by the same number of distinct primes.at n=20A045935
• Number of (5+1)X(n+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically.at n=14A253702
• Numbers k such that k!6 - 27 is prime, where k!6 is the sextuple factorial number (A085158).at n=31A289698
• a(n) is the smallest positive integer m such that 2^n appears as the denominator of a convergent to sqrt(m).at n=16A338308
• a(n) is the smallest number that starts a run of exactly n consecutive integers that are neither primes nor semiprimes.at n=12A343729