Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 5 or 7 king-move adjacent elements, with upper left element zero.
A304923
Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 5 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =16a(1) =22a(2) =73a(3) =266a(4) =1054a(5) =4186a(6) =16158a(7) =63555a(8) =251536a(9) =988178a(10) =3881249a(11) =15283765a(12) =60169598a(13) =236666582a(14) =931151693a(15) =3664515375a(16) =14419463010a(17) =56735373146a(18) =223247607871a(19) =878464272129
External references
- oeis: A304923