Triangle read by rows: row n (n >= 0) consists of the elements g(i, n-i) (0 <= i <= n), where g(r,s) = 1 + Sum_{k=1..r} Product_{i=0..k-1} binomial(r+s-1, s+i) / binomial(r+s-1, i).

A116925

Triangle read by rows: row n (n >= 0) consists of the elements g(i, n-i) (0 <= i <= n), where g(r,s) = 1 + Sum_{k=1..r} Product_{i=0..k-1} binomial(r+s-1, s+i) / binomial(r+s-1, i).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =1a(4) =2a(5) =3a(6) =1a(7) =2a(8) =4a(9) =4a(10) =1a(11) =2a(12) =5a(13) =8a(14) =5a(15) =1a(16) =2a(17) =6a(18) =14a(19) =16a(20) =6a(21) =1a(22) =2a(23) =7a(24) =22a(25) =42a(26) =32a(27) =7a(28) =1a(29) =2

External references