Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k cylinder up to horizontal reflections by two tiles that are each fixed under horizontal reflection.
A368258
Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k cylinder up to horizontal reflections by two tiles that are each fixed under horizontal reflection.
Terms
- a(0) =2a(1) =4a(2) =3a(3) =8a(4) =10a(5) =4a(6) =16a(7) =36a(8) =20a(9) =6a(10) =32a(11) =136a(12) =120a(13) =55a(14) =8a(15) =64a(16) =528a(17) =816a(18) =666a(19) =136a(20) =13a(21) =128a(22) =2080a(23) =5984a(24) =9316a(25) =3536a(26) =430a(27) =18a(28) =256a(29) =8256
External references
- oeis: A368258