Expansion of Sum_{n>=0} ( (1+x)^n/(1-x)^n - (1-x)^n/(1+x)^n )^n / 4^n.
A369088
Expansion of Sum_{n>=0} ( (1+x)^n/(1-x)^n - (1-x)^n/(1+x)^n )^n / 4^n.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =28a(4) =280a(5) =3639a(6) =57996a(7) =1093795a(8) =23821104a(9) =588282772a(10) =16243898516a(11) =495894495629
External references
- oeis: A369088