a(n) = [x^n] (1 - 2*x)/(1 - 8*x + 4*x^2)^(3/2).
A331323
a(n) = [x^n] (1 - 2*x)/(1 - 8*x + 4*x^2)^(3/2).
Terms
- a(0) =1a(1) =10a(2) =90a(3) =772a(4) =6430a(5) =52524a(6) =423220a(7) =3375880a(8) =26720118a(9) =210195100a(10) =1645295212a(11) =12825551160a(12) =99633196780a(13) =771702434104
External references
- oeis: A331323