Number of n X 3 0..1 arrays with no element less than a strict majority of its horizontal and vertical neighbors.
A231377
Number of n X 3 0..1 arrays with no element less than a strict majority of its horizontal and vertical neighbors.
Terms
- a(0) =4a(1) =21a(2) =93a(3) =378a(4) =1519a(5) =6126a(6) =24747a(7) =99964a(8) =403743a(9) =1630662a(10) =6586087a(11) =26600572a(12) =107437031a(13) =433927396a(14) =1752589551a(15) =7078534592a(16) =28589495207a(17) =115470119764a(18) =466372299261
External references
- oeis: A231377