Number of nX2 0..1 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order.
A222450
Number of nX2 0..1 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =7a(4) =10a(5) =23a(6) =64a(7) =175a(8) =400a(9) =983a(10) =2498a(11) =6409a(12) =15982a(13) =40282a(14) =102240a(15) =260590a(16) =662008a(17) =1685764a(18) =4301724a(19) =10996863a(20) =28122246a(21) =71995471a(22) =184507156a(23) =473312401a(24) =1215008846a(25) =3121272497a(26) =8023924572a(27) =20640895689a(28) =53127720534a(29) =136821537884
External references
- oeis: A222450