Number of nX4 0..1 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order.
A222452
Number of nX4 0..1 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order.
Terms
- a(0) =3a(1) =7a(2) =17a(3) =101a(4) =426a(5) =1722a(6) =8483a(7) =46788a(8) =246899a(9) =1263032a(10) =6568737a(11) =34802586a(12) =184657217a(13) =976867173a(14) =5178449568a(15) =27557967928a(16) =146974586179a(17) =784645686795
External references
- oeis: A222452