1/8192 the number of (n+2)X4 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.
A186548
1/8192 the number of (n+2)X4 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.
Terms
- a(0) =290a(1) =19016a(2) =1279862a(3) =88662978a(4) =6215002266a(5) =435599518160
External references
- oeis: A186548