Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically.
A207503
Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically.
Terms
- a(0) =22a(1) =484a(2) =2974a(3) =15495a(4) =68745a(5) =237576a(6) =804887a(7) =2408502a(8) =6896518a(9) =18962878a(10) =49914553a(11) =128946177a(12) =325003322a(13) =806285935a(14) =1976689512a(15) =4789781866a(16) =11521436034a(17) =27522800939a(18) =65396285319a(19) =154757348476a(20) =364908847989a(21) =858133879200
External references
- oeis: A207503