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

A368304

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

Terms

    a(0) =1a(1) =4a(2) =4a(3) =6a(4) =28a(5) =6a(6) =23a(7) =194a(8) =194a(9) =23a(10) =52a(11) =2196a(12) =7296a(13) =2196a(14) =52a(15) =194a(16) =26524a(17) =350573a(18) =350573a(19) =26524a(20) =194a(21) =586a(22) =351588a(23) =17895736a(24) =67136624a(25) =17895736a(26) =351588a(27) =586a(28) =2131a(29) =4798174

External references