Number of nX4 0..1 arrays with every element equal to 1, 2, 3 or 5 king-move adjacent elements, with upper left element zero.
A297947
Number of nX4 0..1 arrays with every element equal to 1, 2, 3 or 5 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =2a(1) =52a(2) =219a(3) =948a(4) =4258a(5) =19561a(6) =88441a(7) =402245a(8) =1831311a(9) =8330961a(10) =37894374a(11) =172425675a(12) =784486903a(13) =3569125339a(14) =16238621755a(15) =73881624965a(16) =336140947838
External references
- oeis: A297947