The number of tilings of a triangular shape T_n with n rectangles identifying all tilings which use the same rectangular shapes.

A247139

The number of tilings of a triangular shape T_n with n rectangles identifying all tilings which use the same rectangular shapes.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =11a(6) =23a(7) =45a(8) =95a(9) =195a(10) =417a(11) =875a(12) =1887a(13) =4021a(14) =8727a(15) =18755a(16) =40850a(17) =88366a(18) =192991a(19) =418994a(20) =916490a(21) =1995080a(22) =4367522a(23) =9521434a(24) =20849739a(25) =45493669

External references