Triangle read by rows: T(n,k) (0<=k<=n) is the number of Delannoy paths of length n, having k (1,1)-steps on the lines y=x, y=x+1 and y=x-1.
A110183
Triangle read by rows: T(n,k) (0<=k<=n) is the number of Delannoy paths of length n, having k (1,1)-steps on the lines y=x, y=x+1 and y=x-1.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =6a(4) =6a(5) =1a(6) =22a(7) =28a(8) =12a(9) =1a(10) =90a(11) =130a(12) =80a(13) =20a(14) =1a(15) =394a(16) =616a(17) =462a(18) =180a(19) =30a(20) =1a(21) =1806a(22) =2982a(23) =2538a(24) =1270a(25) =350a(26) =42a(27) =1a(28) =8558a(29) =14708
External references
- oeis: A110183