Number of n X 2 0..1 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.
A222763
Number of n X 2 0..1 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.
Terms
- a(0) =1a(1) =0a(2) =3a(3) =4a(4) =20a(5) =48a(6) =175a(7) =512a(8) =1719a(9) =5400a(10) =17776a(11) =57420a(12) =188656a(13) =617176a(14) =2033175a(15) =6697744a(16) =22139780a(17) =73262232a(18) =242931321a(19) =806516560a(20) =2681475048a(21) =8925158440a(22) =29740390672a(23) =99196158144a(24) =331163178475
External references
- oeis: A222763