Number of 4Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors exactly one smaller than itself.
A266104
Number of 4Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors exactly one smaller than itself.
Terms
- a(0) =1a(1) =39a(2) =230a(3) =929a(4) =6307a(5) =52171a(6) =371130a(7) =2568565a(8) =18322421a(9) =129531126a(10) =926299920a(11) =6712699992a(12) =48087248218a(13) =341400959047
External references
- oeis: A266104