Triangle read by rows: T(n,k) is the number of 2-compositions of n having k columns with distinct entries (0<=k<=n).
A181302
Triangle read by rows: T(n,k) is the number of 2-compositions of n having k columns with distinct entries (0<=k<=n).
Terms
- a(0) =1a(1) =0a(2) =2a(3) =1a(4) =2a(5) =4a(6) =0a(7) =8a(8) =8a(9) =8a(10) =2a(11) =8a(12) =32a(13) =24a(14) =16a(15) =0a(16) =24a(17) =56a(18) =104a(19) =64a(20) =32a(21) =4a(22) =24a(23) =152a(24) =248a(25) =304a(26) =160a(27) =64a(28) =0a(29) =64
External references
- oeis: A181302