Table read by antidiagonals: T(n,k) is the number of tilings of the n X k grid up to horizontal and vertical reflections by an asymmetric tile.

A368220

Table read by antidiagonals: T(n,k) is the number of tilings of the n X k grid up to horizontal and vertical reflections by an asymmetric tile.

Terms

    a(0) =1a(1) =6a(2) =6a(3) =16a(4) =76a(5) =16a(6) =72a(7) =1056a(8) =1056a(9) =72a(10) =256a(11) =16576a(12) =65536a(13) =16576a(14) =256a(15) =1056a(16) =262656a(17) =4196352a(18) =4196352a(19) =262656a(20) =1056a(21) =4096a(22) =4197376a(23) =268435456a(24) =1073790976a(25) =268435456a(26) =4197376a(27) =4096a(28) =16512a(29) =67117056

External references