44357

Properties

Appears in sequences

• Another approximation to A000084(n).at n=11A001573
• "AFK" (ordered, size, unlabeled) transform of 2,1,1,1,...at n=28A032006
• Numbers k such that 80*R_k + 7 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=19A056695
• An approximation to A000084(n).at n=12A058585
• Balanced primes (A090403) of index 3.at n=22A096707
• Prime partial sums of safe primes A005385.at n=6A172036
• Primes congruent to 5 (mod 504).at n=33A228093
• Numbers that divide exactly two Euclid numbers.at n=33A297891
• a(n) = Sum_{k=1..n} floor(n/k) * (-3)^(k-1).at n=10A344818
• Primes p such that p^2 + 1 has more divisors than p^2 - 1.at n=33A358879
• a(n) = Sum_{k=1..n} (-1)^(k-1) * binomial(k+3,4) * floor(n/k).at n=36A366939
• Prime numbersat n=4614