Number of nX1 0..6 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.
A203059
Number of nX1 0..6 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.
Terms
- a(0) =1a(1) =7a(2) =49a(3) =252a(4) =1127a(5) =4977a(6) =22736a(7) =105813a(8) =491533a(9) =2269938a(10) =10462235a(11) =48259083a(12) =222798408a(13) =1028746629a(14) =4749274209a(15) =21922813539a(16) =101196577809a(17) =467142348798
External references
- oeis: A203059