G.f.: Sum_{n>=0} x^n * Product_{k=1..n} (2*k - x) / (1 - 2*k*x).
A231229
G.f.: Sum_{n>=0} x^n * Product_{k=1..n} (2*k - x) / (1 - 2*k*x).
Terms
- a(0) =1a(1) =2a(2) =11a(3) =96a(4) =1117a(5) =16226a(6) =282503a(7) =5732736a(8) =132852169a(9) =3461582882a(10) =100170007859
External references
- oeis: A231229