Number of tilings of a 7 X n rectangle using pentominoes of shapes W, U, X and monominoes.
A273477
Number of tilings of a 7 X n rectangle using pentominoes of shapes W, U, X and monominoes.
Terms
- a(0) =1a(1) =1a(2) =23a(3) =1086a(4) =13097a(5) =261110a(6) =5732276a(7) =105028302a(8) =2057123951a(9) =40750196324a(10) =789214306848
External references
- oeis: A273477