Number of ways to tile a 5 X n region with square tiles of size up to 5 X 5.

A054857

Number of ways to tile a 5 X n region with square tiles of size up to 5 X 5.

Terms

    a(0) =1a(1) =1a(2) =8a(3) =28a(4) =117a(5) =472a(6) =1916a(7) =7765a(8) =31497a(9) =127707a(10) =517881a(11) =2100025a(12) =8515772a(13) =34532063a(14) =140030059a(15) =567832091a(16) =2302600696a(17) =9337214060a(18) =37863085664a(19) =153537580071a(20) =622606110920

External references