Triangle of distribution of rank sums: Wilcoxon's statistic.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =3a(5) =3a(6) =3a(7) =2a(8) =1a(9) =1a(10) =1a(11) =1a(12) =2a(13) =3a(14) =4a(15) =4a(16) =5a(17) =4a(18) =4a(19) =3a(20) =2a(21) =1a(22) =1a(23) =1a(24) =1a(25) =2a(26) =3a(27) =4a(28) =5a(29) =6