T(n,k) = number of defective 3-colorings of an n X k 0..2 array connected diagonally and antidiagonally with exactly two mistakes, and colors introduced in row-major 0..2 order.
A229685
T(n,k) = number of defective 3-colorings of an n X k 0..2 array connected diagonally and antidiagonally with exactly two mistakes, and colors introduced in row-major 0..2 order.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =2a(5) =0a(6) =0a(7) =36a(8) =36a(9) =0a(10) =0a(11) =360a(12) =888a(13) =360a(14) =0a(15) =0a(16) =2688a(17) =10896a(18) =10896a(19) =2688a(20) =0a(21) =0a(22) =17280a(23) =108000a(24) =186576a(25) =108000a(26) =17280a(27) =0a(28) =0a(29) =101376
External references
- oeis: A229685