Number of nX4 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 1 1 vertically.
A208497
Number of nX4 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 1 1 vertically.
Terms
- a(0) =10a(1) =100a(2) =144a(3) =324a(4) =650a(5) =1406a(6) =3024a(7) =6150a(8) =13560a(9) =28688a(10) =59598a(11) =128520a(12) =274230a(13) =576520a(14) =1218560a(15) =2621232a(16) =5546520a(17) =11635076a(18) =24984990a(19) =53176014a(20) =111623072a(21) =237955858a(22) =508611568a(23) =1072136960a(24) =2270141058a(25) =4856035380a(26) =10288291950
External references
- oeis: A208497