Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X 8 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=3, 0<=k<=2*floor(n/3), read by rows.
A238558
Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X 8 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=3, 0<=k<=2*floor(n/3), read by rows.
Terms
- a(0) =1a(1) =3a(2) =4a(3) =1a(4) =3a(5) =8a(6) =1a(7) =6a(8) =18a(9) =1a(10) =6a(11) =36a(12) =32a(13) =13a(14) =1a(15) =9a(16) =64a(17) =128a(18) =87a(19) =1a(20) =9a(21) =100a(22) =308a(23) =332a(24) =1a(25) =12a(26) =146a(27) =647a(28) =1118a(29) =451
External references
- oeis: A238558