Number of 2-colorings of a 3 X n rectangle for which no subsquare has monochromatic corners.
A133357
Number of 2-colorings of a 3 X n rectangle for which no subsquare has monochromatic corners.
Terms
- a(0) =1a(1) =8a(2) =50a(3) =276a(4) =1498a(5) =8352a(6) =46730a(7) =260204a(8) =1447890a(9) =8062968a(10) =44907298a(11) =250082756a(12) =1392637914a(13) =7755351712a(14) =43188407610a(15) =240509081468
External references
- oeis: A133357