Number of free poly-IH12-tiles (holes allowed) with n cells.
A197553
Number of free poly-IH12-tiles (holes allowed) with n cells.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =99a(5) =416a(6) =1852a(7) =8386a(8) =38797a(9) =181530a(10) =858560a(11) =4092031a(12) =19636098a(13) =94750833
External references
- oeis: A197553