Triangle read by rows: T(n,k) is the number of free polyominoes with width n and height 1<=k<=n.
A268371
Triangle read by rows: T(n,k) is the number of free polyominoes with width n and height 1<=k<=n.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =6a(5) =24a(6) =1a(7) =12a(8) =181a(9) =1051a(10) =1a(11) =30a(12) =941a(13) =21992a(14) =238048a(15) =1a(16) =65a(17) =4662a(18) =228013a(19) =9735647a(20) =195284973a(21) =1a(22) =158a(23) =23691a(24) =2337694a(25) =195616247a(26) =15256715219a(27) =577169894573
External references
- oeis: A268371