Number of side-n hexagonal 0..5 arrays with values nondecreasing E, SW and SE.
A216934
Number of side-n hexagonal 0..5 arrays with values nondecreasing E, SW and SE.
Terms
- a(0) =6a(1) =1572a(2) =1374208a(3) =1783839948
External references
- oeis: A216934