Irregular triangle read by rows: T(n, k) = number of ways to tile an n X n X n triangular area with k 2 X 2 X 2 triangular tiles and an appropriate number (= n^2-4*k) of 1 X 1 X 1 tiles.
A286436
Irregular triangle read by rows: T(n, k) = number of ways to tile an n X n X n triangular area with k 2 X 2 X 2 triangular tiles and an appropriate number (= n^2-4*k) of 1 X 1 X 1 tiles.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =7a(7) =9a(8) =4a(9) =1a(10) =1a(11) =13a(12) =48a(13) =63a(14) =25a(15) =1a(16) =21a(17) =153a(18) =494a(19) =747a(20) =546a(21) =219a(22) =57a(23) =9a(24) =1a(25) =1a(26) =31a(27) =372a(28) =2247a(29) =7459
External references
- oeis: A286436