Triangle giving number L(k,n) of isotopy classes of Latin rectangles.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =2a(9) =2a(10) =1a(11) =2a(12) =3a(13) =3a(14) =2a(15) =1a(16) =4a(17) =16a(18) =56a(19) =40a(20) =22a(21) =1a(22) =4a(23) =56a(24) =1398a(25) =6941a(26) =3479a(27) =564a(28) =1a(29) =7