Triangle read by rows: T(n,k) is the sum of the lengths of the free polyominoes with n cells and length k, n >= 1, k >= 1.
A379638
Triangle read by rows: T(n,k) is the sum of the lengths of the free polyominoes with n cells and length k, n >= 1, k >= 1.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =0a(4) =2a(5) =3a(6) =0a(7) =2a(8) =9a(9) =4a(10) =0a(11) =0a(12) =24a(13) =12a(14) =5a(15) =0a(16) =0a(17) =24a(18) =84a(19) =25a(20) =6a(21) =0a(22) =0a(23) =21a(24) =236a(25) =180a(26) =30a(27) =7a(28) =0a(29) =0
External references
- oeis: A379638