31935
domain: N
Appears in sequences
- Numbers k such that sigma(k-phi(k)) = phi(k).at n=14A070170
- Number of partitions of n such that the number of different parts is odd.at n=42A090794
- Number of ways two L-tiles can be placed on an n X n square.at n=17A243645
- Exponential transform of odd primes.at n=6A353079
- a(n) = smallest k such that li(k) - pi(k) >= n, where li(k) is the logarithmic integral and pi(x) is the number of primes <= x.at n=36A359145