Number of nX2 0..3 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222788
Number of nX2 0..3 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =0a(1) =3a(2) =8a(3) =55a(4) =294a(5) =1883a(6) =11920a(7) =78255a(8) =517050a(9) =3451712a(10) =23156964a(11) =156076271a(12) =1055435486a(13) =7157673375a(14) =48656943008a(15) =331450961443
External references
- oeis: A222788