Number of free poly-IH13-tiles (holes allowed) with n cells.
A197959
Number of free poly-IH13-tiles (holes allowed) with n cells.
Terms
- a(0) =1a(1) =3a(2) =7a(3) =28a(4) =99a(5) =433a(6) =1852a(7) =8463a(8) =38797a(9) =181888a(10) =858560a(11) =4093728a(12) =19636098a(13) =94758985
External references
- oeis: A197959