Number of tilings of a 7 X n rectangle using integer-sided rectangular tiles of equal area.

A220773

Number of tilings of a 7 X n rectangle using integer-sided rectangular tiles of equal area.

Terms

    a(0) =1a(1) =2a(2) =24a(3) =12a(4) =850a(5) =7a(6) =31777a(7) =4a(8) =1300180a(9) =2877a(10) =53175580a(11) =9a(12) =2189911837a(13) =11a(14) =90124167476a(15) =972776a(17) =25a(19) =38a(21) =329097191a(23) =86a(25) =8709a(27) =111328277385

External references