Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape P; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

A247706

Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape P; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

Terms

    a(0) =1a(1) =1a(2) =0a(3) =3a(4) =0a(5) =2a(6) =16a(7) =20a(8) =20a(9) =0a(10) =135a(11) =204a(12) =140a(13) =16a(14) =6a(15) =944a(16) =1432a(17) =1164a(18) =296a(19) =170a(20) =0a(21) =4814a(22) =8796a(23) =8452a(24) =4068a(25) =1708a(26) =92a(27) =20a(28) =26435a(29) =58656

External references