Triangle read by rows: T(n,k) is the number of deco polyominoes of height n with k cells in the first column. (A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column).
A100822
Triangle read by rows: T(n,k) is the number of deco polyominoes of height n with k cells in the first column. (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) =1a(2) =1a(3) =2a(4) =3a(5) =1a(6) =6a(7) =8a(8) =9a(9) =1a(10) =24a(11) =30a(12) =32a(13) =33a(14) =1a(15) =120a(16) =144a(17) =150a(18) =152a(19) =153a(20) =1a(21) =720a(22) =840a(23) =864a(24) =870a(25) =872a(26) =873a(27) =1a(28) =5040a(29) =5760
External references
- oeis: A100822