Ninth column (and diagonal) of Narayana triangle A001263.

Terms

a(0) =1a(1) =45a(2) =825a(3) =9075a(4) =70785a(5) =429429a(6) =2147145a(7) =9202050a(8) =34763300a(9) =118195220a(10) =367479684a(11) =1057896060a(12) =2848181700a(13) =7229999700a(14) =17420856420a(15) =40067969766a(16) =88385227425a(17) =187746398125a(18) =385374185625a(19) =766691800875