a(n) = A222051(n)/binomial(2*n,n), the central terms in rows of triangle A220178 divided by the central binomial coefficients.
A222052
a(n) = A222051(n)/binomial(2*n,n), the central terms in rows of triangle A220178 divided by the central binomial coefficients.
Terms
- a(0) =1a(1) =3a(2) =25a(3) =210a(4) =1881a(5) =17303a(6) =162214a(7) =1540710a(8) =14776281a(9) =142774455a(10) =1387743525a(11) =13553773500a(12) =132906406950
External references
- oeis: A222052