256250
domain: N
Appears in sequences
- Positive integers n such that n | (2^n + n/2 + 1).at n=18A015945
- Numbers j that are the hypotenuse of exactly 16 distinct integer-sided right triangles, i.e., j^2 can be written as a sum of two squares in 16 ways.at n=17A097238
- Numbers n such that phi(n)/n = 16/41.at n=31A176598
- a(n) = exp(-1/5) * Sum_{k>=0} (5*k - 1)^n / (5^k * k!).at n=7A337041