Number of 3Xn 0..1 arrays with exactly floor(3Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.
A222771
Number of 3Xn 0..1 arrays with exactly floor(3Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.
Terms
- a(0) =0a(1) =4a(2) =13a(3) =66a(4) =158a(5) =934a(6) =2446a(7) =14567a(8) =39972a(9) =240130a(10) =673665a(11) =4073862a(12) =11545686a(13) =70212506a(14) =200446066a(15) =1224207384a(16) =3512430906a(17) =21526789216a(18) =62001340484a(19) =381049009426
External references
- oeis: A222771