Number A(n,k) of tilings of a 3k X n rectangle using 3n k-ominoes of shape I; square array A(n,k), n>=0, k>=0, read by antidiagonals.
A251072
Number A(n,k) of tilings of a 3k X n rectangle using 3n k-ominoes of shape I; square array A(n,k), n>=0, k>=0, read by antidiagonals.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =1a(11) =1a(12) =13a(13) =1a(14) =1a(15) =1a(16) =1a(17) =1a(18) =41a(19) =1a(20) =1a(21) =1a(22) =1a(23) =1a(24) =19a(25) =281a(26) =1a(27) =1a(28) =1a(29) =1
External references
- oeis: A251072