5201280

Appears in sequences

• Expansion of e.g.f. (2 - 4*x + x^2)/((1 - x)*(1 - 2*x)).at n=8A052584
• Sequence of distinct least positive numbers such that the average of the first n terms is a factorial.at n=15A249769
• a(n) = n! * Sum_{k=0..floor(n/3)} k^n/k!.at n=8A357192