Number of side-5 hexagonal 0..n arrays with values nondecreasing E, SW and SE.
A216941
Number of side-5 hexagonal 0..n arrays with values nondecreasing E, SW and SE.
Terms
- a(0) =1256a(1) =618013a(2) =161114424a(3) =25604764159
External references
- oeis: A216941