Number of nX4 0..1 arrays with no element equal to the same number of vertical neighbors as horizontal neighbors, with new values 0..1 introduced in row major order.
A240645
Number of nX4 0..1 arrays with no element equal to the same number of vertical neighbors as horizontal neighbors, with new values 0..1 introduced in row major order.
Terms
- a(0) =2a(1) =3a(2) =8a(3) =18a(4) =61a(5) =168a(6) =526a(7) =1643a(8) =5524a(9) =18762a(10) =65149a(11) =228440a(12) =807770a(13) =2872483a(14) =10255424a(15) =36709394a(16) =131630309a(17) =472542776a(18) =1697728566a(19) =6102699043a(20) =21944561100a(21) =78928279002a(22) =283926402165
External references
- oeis: A240645