Number of nX5 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300495
Number of nX5 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =16a(1) =138a(2) =412a(3) =1513a(4) =5837a(5) =19412a(6) =66166a(7) =233796a(8) =816547a(9) =2856851a(10) =10105271a(11) =35807047a(12) =126898449a(13) =450853006a(14) =1604410583a(15) =5713873343a(16) =20369525696a(17) =72682756405a(18) =259511936921a(19) =927071784687
External references
- oeis: A300495