163578

Appears in sequences

• G.f.: Sum_{n>=0} x^n*Product_{k=1..n} (1 - k*x) / (1 - (2*k)*x).at n=9A193321
• a(n) = Sum_{k=0..floor(n/2)} k^k * Stirling2(n-k,k).at n=11A353287