Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 1 vertically.
A208551
Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 1 vertically.
Terms
- a(0) =10a(1) =100a(2) =330a(3) =1089a(4) =2508a(5) =5776a(6) =11020a(7) =21025a(8) =35670a(9) =60516a(10) =94710a(11) =148225a(12) =218680a(13) =322624a(14) =454968a(15) =641601a(16) =873090a(17) =1188100a(18) =1570690a(19) =2076481a(20) =2680260a(21) =3459600a(22) =4376580a(23) =5536609a(24) =6884878a(25) =8561476a(26) =10489710a(27) =12852225a(28) =15544560a(29) =18800896
External references
- oeis: A208551