Number of nX4 0..1 arrays with every element equal to 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300772
Number of nX4 0..1 arrays with every element equal to 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =4a(2) =11a(3) =36a(4) =179a(5) =735a(6) =3482a(7) =15986a(8) =74347a(9) =346927a(10) =1617399a(11) =7555603a(12) =35285141a(13) =164831052a(14) =770046798a(15) =3597506545a(16) =16807267889a(17) =78522710349a(18) =366856173460
External references
- oeis: A300772