Triangle read by rows: T(n,k) is the number of deco polyominoes of height n and having k 2-cell columns starting at level 0 (n >= 1; 0 <= k <= n-1).
A121634
Triangle read by rows: T(n,k) is the number of deco polyominoes of height n and having k 2-cell columns starting at level 0 (n >= 1; 0 <= k <= n-1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =1a(6) =8a(7) =10a(8) =5a(9) =1a(10) =42a(11) =44a(12) =25a(13) =8a(14) =1a(15) =264a(16) =242a(17) =144a(18) =57a(19) =12a(20) =1a(21) =1920a(22) =1594a(23) =962a(24) =429a(25) =117a(26) =17a(27) =1a(28) =15840a(29) =12204
External references
- oeis: A121634