Column 1 of triangle A132615 divided by twice the row index less 1.
A132619
Column 1 of triangle A132615 divided by twice the row index less 1.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =54a(4) =940a(5) =22917a(6) =722530a(7) =28009490a(8) =1289854644a(9) =68827561580
External references
- oeis: A132619