Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X 10 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=3, 0<=k<=3*floor(n/3), read by rows.

A238592

Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X 10 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=3, 0<=k<=3*floor(n/3), read by rows.

Terms

    a(0) =1a(1) =4a(2) =9a(3) =2a(4) =1a(5) =4a(6) =18a(7) =8a(8) =1a(9) =8a(10) =42a(11) =28a(12) =1a(13) =8a(14) =77a(15) =165a(16) =151a(17) =44a(18) =6a(19) =1a(20) =12a(21) =133a(22) =521a(23) =891a(24) =543a(25) =106a(26) =1a(27) =12a(28) =200a(29) =1160

External references