Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape I; triangle T(n,k), n>=0, 0<=k<=n, read by rows.
A247703
Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape I; triangle T(n,k), n>=0, 0<=k<=n, read by rows.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =4a(4) =0a(5) =1a(6) =47a(7) =8a(8) =0a(9) =1a(10) =394a(11) =94a(12) =12a(13) =0a(14) =1a(15) =2082a(16) =1608a(17) =282a(18) =32a(19) =0a(20) =2a(21) =15113a(22) =8812a(23) =3452a(24) =512a(25) =58a(26) =0a(27) =3a(28) =111664a(29) =73863
External references
- oeis: A247703