Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 1 0 vertically.
A207492
Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 1 0 vertically.
Terms
- a(0) =35a(1) =1225a(2) =2233a(3) =11306a(4) =39050a(5) =89417a(6) =268275a(7) =667760a(8) =1691526a(9) =4324858a(10) =10910668a(11) =28038606a(12) =71784122a(13) =186198243a(14) =482642047a(15) =1259170885a(16) =3300248079a(17) =8616047712a(18) =22660486326a(19) =59449698479a(20) =156019165327a(21) =410863919802
External references
- oeis: A207492