Expansion of Product_{k>=1} (1 + x^k)^(2*k-1)!!.
A305869
Expansion of Product_{k>=1} (1 + x^k)^(2*k-1)!!.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =18a(4) =123a(5) =1098a(6) =11806a(7) =150406a(8) =2218065a(9) =37206485a(10) =699604235a(11) =14572941915a(12) =333037896380
External references
- oeis: A305869