Number of ways to tile a 1 X n strip using squares, red dominos, and blue dominos, where the number of red dominos must be twice the number of blues.
A383952
Number of ways to tile a 1 X n strip using squares, red dominos, and blue dominos, where the number of red dominos must be twice the number of blues.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =4a(7) =13a(8) =31a(9) =61a(10) =106a(11) =169a(12) =268a(13) =466a(14) =916a(15) =1921a(16) =4009a(17) =8023a(18) =15310a(19) =28261a(20) =51706a(21) =96004a(22) =183088a(23) =357229a(24) =703366a(25) =1378996a(26) =2673799a(27) =5129338a(28) =9786748a(29) =18693706
External references
- oeis: A383952