Number of nX5 0..1 arrays with every element equal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300369
Number of nX5 0..1 arrays with every element equal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =3a(2) =3a(3) =4a(4) =32a(5) =92a(6) =270a(7) =1262a(8) =3561a(9) =13976a(10) =48859a(11) =173602a(12) =622502a(13) =2233811a(14) =7882027a(15) =28343929a(16) =100832747a(17) =360076171a(18) =1284751998a(19) =4584944102a(20) =16356781324a(21) =58381988677a(22) =208293028674a(23) =743376640816
External references
- oeis: A300369