The number of tilings of a 5 X (4n) floor with 1 X 4 tetrominoes.
A236579
The number of tilings of a 5 X (4n) floor with 1 X 4 tetrominoes.
Terms
- a(0) =1a(1) =3a(2) =15a(3) =75a(4) =371a(5) =1833a(6) =9057a(7) =44753a(8) =221137a(9) =1092699a(10) =5399327a(11) =26679563a(12) =131831075a(13) =651413681a(14) =3218814561a(15) =15905050017a(16) =78591236385a(17) =388340962771
External references
- oeis: A236579