Number of defective 3-colorings of a 2 X n 0..2 array connected horizontally, diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order.

A229535

Number of defective 3-colorings of a 2 X n 0..2 array connected horizontally, diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order.

Terms

    a(0) =0a(1) =4a(2) =8a(3) =36a(4) =112a(5) =368a(6) =1152a(7) =3568a(8) =10880a(9) =32832a(10) =98176a(11) =291392a(12) =859392a(13) =2520832a(14) =7359488a(15) =21397248a(16) =61984768a(17) =178979840a(18) =515303424a(19) =1479746560a(20) =4239208448a(21) =12118487040a(22) =34574761984a(23) =98466394112a(24) =279960846336a(25) =794771341312

External references