a(n) = (2*n-1)*(n-1)^(n-1).
A176043
a(n) = (2*n-1)*(n-1)^(n-1).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =20a(4) =189a(5) =2304a(6) =34375a(7) =606528a(8) =12353145a(9) =285212672a(10) =7360989291a(11) =210000000000
External references
- oeis: A176043
A176043
a(n) = (2*n-1)*(n-1)^(n-1).