139109

Properties

Appears in sequences

• a(0)=1, a(1)=2; a(2n) = 2*a(2n-1)+1; a(2n+1) = a(2n) + x, where x is the least number not yet the difference of two terms.at n=28A111328
• Primes n of the form 1000p+q with primes p and q, 998>p>q>100.at n=6A228268
• Prime numbersat n=12932