Number of n X 3 0..1 arrays avoiding the patterns 0 1 0 or 1 0 1 in any row, column, diagonal or antidiagonal.
A206982
Number of n X 3 0..1 arrays avoiding the patterns 0 1 0 or 1 0 1 in any row, column, diagonal or antidiagonal.
Terms
- a(0) =6a(1) =36a(2) =58a(3) =158a(4) =420a(5) =1066a(6) =2754a(7) =7140a(8) =18430a(9) =47602a(10) =123028a(11) =317870a(12) =821262a(13) =2121988a(14) =5482746a(15) =14166078a(16) =36601876a(17) =94570810a(18) =244348930a(19) =631340852a(20) =1631238222a(21) =4214740594a(22) =10889910564a(23) =28136999454a(24) =72699470734a(25) =187838545012
External references
- oeis: A206982