Number of side-n hexagonal 0..6 arrays with values nondecreasing E, SW and SE.
A216935
Number of side-n hexagonal 0..6 arrays with values nondecreasing E, SW and SE.
Terms
- a(0) =7a(1) =3630a(2) =8737047a(3) =37112483200
External references
- oeis: A216935