Triangle read by rows: T(n,k) = number of tilings of a n X k rectangle using 2 X 2 and 1 X 1 tiles and dominoes, n >= 0, k = 0..n.
A352589
Triangle read by rows: T(n,k) = number of tilings of a n X k rectangle using 2 X 2 and 1 X 1 tiles and dominoes, n >= 0, k = 0..n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =8a(6) =1a(7) =3a(8) =26a(9) =163a(10) =1a(11) =5a(12) =90a(13) =1125a(14) =15623a(15) =1a(16) =8a(17) =306a(18) =7546a(19) =210690a(20) =5684228a(21) =1a(22) =13a(23) =1046a(24) =51055a(25) =2865581a(26) =154869092a(27) =8459468955a(28) =1a(29) =21
External references
- oeis: A352589