a(n) = [x^n] Product_{k=1..n} 1/(1 + (n - k + 1)*x^k).
A303190
a(n) = [x^n] Product_{k=1..n} 1/(1 + (n - k + 1)*x^k).
Terms
- a(0) =1a(1) =-1a(2) =3a(3) =-22a(4) =224a(5) =-2759a(6) =41629a(7) =-743319a(8) =15285861a(9) =-355719616a(10) =9242332881a(11) =-265191971970
External references
- oeis: A303190