Number of (3+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal.
A232518
Number of (3+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal.
Terms
- a(0) =8a(1) =200a(2) =128a(3) =2516a(4) =1730a(5) =32084a(6) =24388a(7) =408486a(8) =338230a(9) =5204242a(10) =4662970a(11) =66327440a(12) =63885378a(13) =845656538a(14) =870767072a(15) =10785923316a(16) =11815519304a(17) =137619885396a(18) =159699421970
External references
- oeis: A232518