a(n) = n!*Sum_{m=0..floor((n-1)/2)} 1/(n-m)/binomial(n-m-1,m).
A358491
a(n) = n!*Sum_{m=0..floor((n-1)/2)} 1/(n-m)/binomial(n-m-1,m).
Terms
- a(0) =1a(1) =1a(2) =5a(3) =10a(4) =74a(5) =216a(6) =2316a(7) =8688a(8) =128880a(9) =581760a(10) =11406240a(11) =59667840a(12) =1482693120a(13) =8782905600a(14) =266800262400
External references
- oeis: A358491