In the triangle shown below the n-th row contains n rational numbers n/1, {n*(n-1)}/{n +(n-1)}, {(n)*(n-1)*(n-2)}/{n +(n-1)+(n-2)}, ..., the last term being 2*(n-1)!/(n+1). Sequence gives the numerators in each row.

A093422

In the triangle shown below the n-th row contains n rational numbers n/1, {n*(n-1)}/{n +(n-1)}, {(n)*(n-1)*(n-2)}/{n +(n-1)+(n-2)}, ..., the last term being 2*(n-1)!/(n+1). Sequence gives the numerators in each row.

Terms

    a(0) =1a(1) =2a(2) =2a(3) =3a(4) =6a(5) =1a(6) =4a(7) =12a(8) =8a(9) =12a(10) =5a(11) =20a(12) =5a(13) =60a(14) =8a(15) =6a(16) =30a(17) =8a(18) =20a(19) =36a(20) =240a(21) =7a(22) =42a(23) =35a(24) =420a(25) =504a(26) =560a(27) =180a(28) =8a(29) =56

External references