One half of the number of Young tableaux with n cells whose shape is asymmetric.

A067142

One half of the number of Young tableaux with n cells whose shape is asymmetric.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =1a(4) =4a(5) =10a(6) =30a(7) =106a(8) =316a(9) =1254a(10) =4140a(11) =17128a(12) =63856a(13) =271492a(14) =1126216a(15) =4936608a(16) =22278712a(17) =101330506a(18) =487735440a(19) =2313734596a(20) =11706759352a(21) =58073844300a(22) =305941244576

External references