Number of black/white colorings of a 3 X n rectangle which have no monochromatic 2 by 2 subsquares.
A133129
Number of black/white colorings of a 3 X n rectangle which have no monochromatic 2 by 2 subsquares.
Terms
- a(0) =1a(1) =8a(2) =50a(3) =322a(4) =2066a(5) =13262a(6) =85126a(7) =546410a(8) =3507314a(9) =22512862a(10) =144506294a(11) =927561722a(12) =5953863490a(13) =38216853518a(14) =245307588134
External references
- oeis: A133129