Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape W; triangle T(n,k), n>=0, 0<=k<=max(0,floor((n-2)/2)*2) read by rows.
A247710
Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape W; triangle T(n,k), n>=0, 0<=k<=max(0,floor((n-2)/2)*2) read by rows.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =56a(4) =461a(5) =32a(6) =8a(7) =3558a(8) =368a(9) =80a(10) =23966a(11) =3256a(12) =696a(13) =24a(14) =8a(15) =178127a(16) =29564a(17) =6558a(18) =360a(19) =80a(20) =1362597a(21) =266672a(22) =61858a(23) =4852a(24) =770a(25) =24a(26) =8a(27) =10194184a(28) =2361632a(29) =581452
External references
- oeis: A247710