Number of side-n hexagonal 0..3 arrays with values nondecreasing E, SW and SE.
A216932
Number of side-n hexagonal 0..3 arrays with values nondecreasing E, SW and SE.
Terms
- a(0) =4a(1) =200a(2) =17336a(3) =1664244a(4) =161114424a(5) =15316983096
External references
- oeis: A216932