Triangle read by rows: T(n,k) is the number of deco polyominoes of height n and having k columns of odd length (0<=k<=n). A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column.
A121745
Triangle read by rows: T(n,k) is the number of deco polyominoes of height n and having k columns of odd length (0<=k<=n). A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =1a(4) =0a(5) =1a(6) =1a(7) =3a(8) =1a(9) =1a(10) =3a(11) =6a(12) =9a(13) =4a(14) =2a(15) =9a(16) =28a(17) =36a(18) =30a(19) =13a(20) =4a(21) =27a(22) =107a(23) =195a(24) =198a(25) =130a(26) =51a(27) =12a(28) =117a(29) =532
External references
- oeis: A121745