Triangle read by rows: T(n,k) is the sum of the weights of all vertices labeled k at depth n in the Catalan tree (1 <= k <= n+1, n >= 0).
A102625
Triangle read by rows: T(n,k) is the sum of the weights of all vertices labeled k at depth n in the Catalan tree (1 <= k <= n+1, n >= 0).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =6a(6) =15a(7) =30a(8) =36a(9) =24a(10) =105a(11) =210a(12) =270a(13) =240a(14) =120a(15) =945a(16) =1890a(17) =2520a(18) =2520a(19) =1800a(20) =720a(21) =10395a(22) =20790a(23) =28350a(24) =30240a(25) =25200a(26) =15120a(27) =5040a(28) =135135a(29) =270270
External references
- oeis: A102625