a(n) = number of standard Young tableaux of type (n,n-1,n-1).
A123691
a(n) = number of standard Young tableaux of type (n,n-1,n-1).
Terms
- a(0) =1a(1) =3a(2) =21a(3) =210a(4) =2574a(5) =36036a(6) =554268a(7) =9145422a(8) =159352050a(9) =2900207310a(10) =54698315490
External references
- oeis: A123691