Number of nX5 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300941
Number of nX5 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =6a(2) =19a(3) =75a(4) =248a(5) =836a(6) =2975a(7) =10597a(8) =37967a(9) =140091a(10) =517221a(11) =1899615a(12) =6983710a(13) =25640349a(14) =94047532a(15) =345012700a(16) =1265802798a(17) =4645031772a(18) =17044820956a(19) =62544944003a(20) =229495469391a(21) =842069429957
External references
- oeis: A300941