G.f.: A(x) satisfies 1 = Sum_{n>=0} Product_{k=3*n..4*n-1} ( (1+x)^k - A(x) ).
A338183
G.f.: A(x) satisfies 1 = Sum_{n>=0} Product_{k=3*n..4*n-1} ( (1+x)^k - A(x) ).
Terms
- a(0) =1a(1) =3a(2) =15a(3) =355a(4) =13876a(5) =722211a(6) =46171804a(7) =3473185910a(8) =299362847750
External references
- oeis: A338183