Irregular triangle read by rows: T(n, k) = number of non-equivalent 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.
A286443
Irregular triangle read by rows: T(n, k) = number of non-equivalent 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) =1a(5) =1a(6) =3a(7) =3a(8) =2a(9) =1a(10) =1a(11) =4a(12) =10a(13) =14a(14) =6a(15) =1a(16) =6a(17) =32a(18) =97a(19) =142a(20) =105a(21) =46a(22) =14a(23) =3a(24) =1a(25) =1a(26) =8a(27) =70a(28) =398a(29) =1280
External references
- oeis: A286443