G.f. x*(1-11*x+6*x^2)/(1-12*x+15*x^2-2*x^3).
A122009
G.f. x*(1-11*x+6*x^2)/(1-12*x+15*x^2-2*x^3).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =23a(4) =233a(5) =2457a(6) =26035a(7) =276031a(8) =2926761a(9) =31032737a(10) =329043491a(11) =3488884359a(12) =36993025417a(13) =392241126601
External references
- oeis: A122009