a(n) = n!*Sum_{m=1..floor(n/2)} 1/(m^2*binomial(n-m,m)).
A358651
a(n) = n!*Sum_{m=1..floor(n/2)} 1/(m^2*binomial(n-m,m)).
Terms
- a(0) =0a(1) =0a(2) =2a(3) =3a(4) =14a(5) =40a(6) =254a(7) =1106a(8) =9400a(9) =56232a(10) =607392a(11) =4685472a(12) =61485984a(13) =585235872a(14) =9014205888a(15) =102480586560
External references
- oeis: A358651