G.f.: A(x) satisfies 1 = Sum_{n>=0} Product_{k=n..2*n-1} ( (1+x)^k - A(x) ).
A338178
G.f.: A(x) satisfies 1 = Sum_{n>=0} Product_{k=n..2*n-1} ( (1+x)^k - A(x) ).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =23a(4) =383a(5) =8456a(6) =228657a(7) =7268077a(8) =264627570a(9) =10842464809a(10) =493454895161
External references
- oeis: A338178