G.f.: Sum_{n>=0} Product_{k=1..n} (1 - (1-x)^(2*k-1))/(1 - x^(2*k-1)).
A207653
G.f.: Sum_{n>=0} Product_{k=1..n} (1 - (1-x)^(2*k-1))/(1 - x^(2*k-1)).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =16a(4) =77a(5) =460a(6) =3287a(7) =27561a(8) =265307a(9) =2880875a(10) =34821316a(11) =463543454a(12) =6737545832a(13) =106158368798
External references
- oeis: A207653