Number of nX1 0..5 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.
A203050
Number of nX1 0..5 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.
Terms
- a(0) =1a(1) =6a(2) =36a(3) =161a(4) =636a(5) =2507a(6) =10213a(7) =42182a(8) =173606a(9) =710976a(10) =2908797a(11) =11911516a(12) =48807427a(13) =199987737a(14) =819315100a(15) =3356387171a(16) =13749952752a(17) =56330082115a(18) =230771042950a(19) =945410224602
External references
- oeis: A203050