221595
domain: N
Appears in sequences
- Numbers k such that sigma(k) = sigma(k+11).at n=30A015881
- Numbers k such that 149*2^k+1 is prime.at n=33A032424
- One eighty-fourth the area of primitive Pythagorean triangles with (increasing) square hypotenuses (precisely those of A008846).at n=16A072289
- Expansion of f(-q)^10*Q(q) in powers of q.at n=8A122269