1006091

Properties

Appears in sequences

• Primes k with (say) j digits that produce two other primes, x and y, from the sums x = Sum_{i=1..j} (k mod 10^i) and y = Sum_{i=0..j-1} (floor(k/10^i)).at n=13A281021
• The number of hanging vertically stable self-avoiding walks of length n on a 2D square lattice where only the connecting rods have mass.at n=19A335596
• a(n) is the least integer k such that n/(Sum_{j=1..n} 1/phi(k*j)) is an integer.at n=41A341813
• Prime numbersat n=78946