Triangle read by rows: Joffe's central differences of zero, T(n,k), 1 <= k <= n.

Terms

a(0) =1a(1) =1a(2) =6a(3) =1a(4) =30a(5) =90a(6) =1a(7) =126a(8) =1260a(9) =2520a(10) =1a(11) =510a(12) =13230a(13) =75600a(14) =113400a(15) =1a(16) =2046a(17) =126720a(18) =1580040a(19) =6237000a(20) =7484400a(21) =1a(22) =8190a(23) =1171170a(24) =28828800a(25) =227026800a(26) =681080400a(27) =681080400a(28) =1a(29) =32766