Number of nX2 0..2 arrays with no more than floor(nX2/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order.
A223468
Number of nX2 0..2 arrays with no more than floor(nX2/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =1a(1) =6a(2) =18a(3) =58a(4) =140a(5) =352a(6) =776a(7) =1752a(8) =3696a(9) =7904a(10) =16288a(11) =33824a(12) =68800a(13) =140544a(14) =283776a(15) =574336a(16) =1154816a(17) =2324992a(18) =4663808a(19) =9361920a(20) =18754560a(21) =37584896a(22) =75237376a(23) =150640640a(24) =301428736a(25) =603217920a(26) =1206755328a(27) =2414288896a(28) =4829265920
External references
- oeis: A223468