Number of nX3 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, vertically or antidiagonally, and no adjacent values equal.
A232156
Number of nX3 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, vertically or antidiagonally, and no adjacent values equal.
Terms
- a(0) =4a(1) =62a(2) =290a(3) =1284a(4) =5902a(5) =27086a(6) =124436a(7) =572080a(8) =2629946a(9) =12090710a(10) =55591878a(11) =255589946a(12) =1175154022a(13) =5403111082a(14) =24842308392a(15) =114220099740a(16) =525160514282
External references
- oeis: A232156