Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 1 vertically.
A207513
Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 1 vertically.
Terms
- a(0) =25a(1) =625a(2) =1292a(3) =4168a(4) =11465a(5) =22960a(6) =50322a(7) =105370a(8) =214519a(9) =434467a(10) =859485a(11) =1700263a(12) =3341334a(13) =6498994a(14) =12653384a(15) =24514485a(16) =47342410a(17) =91409818a(18) =176001232a(19) =338633421a(20) =651272262a(21) =1250858298a(22) =2403095620a(23) =4614434368a(24) =8859453967a(25) =17015312734
External references
- oeis: A207513