G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n * ((1+x)^n - A(x))^n, where A(0) = 1.
A325577
G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n * ((1+x)^n - A(x))^n, where A(0) = 1.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =1a(4) =2a(5) =7a(6) =30a(7) =118a(8) =581a(9) =2858a(10) =15252a(11) =86277a(12) =509438a(13) =3167161a(14) =20523646a(15) =138503668a(16) =971523468a(17) =7063593311a(18) =53158580100a(19) =413391215663
External references
- oeis: A325577