a(n) = ((2n+1) + (2n-1) - 1)!/((2n+1)!*(2n-1)!).
A065097
a(n) = ((2n+1) + (2n-1) - 1)!/((2n+1)!*(2n-1)!).
Terms
- a(0) =1a(1) =1a(2) =7a(3) =66a(4) =715a(5) =8398a(6) =104006a(7) =1337220a(8) =17678835a(9) =238819350a(10) =3282060210a(11) =45741281820a(12) =644952073662
External references
- oeis: A065097