Number of 5Xn 0..2 arrays with rows unimodal and columns nondecreasing.
A224192
Number of 5Xn 0..2 arrays with rows unimodal and columns nondecreasing.
Terms
- a(0) =21a(1) =441a(2) =5852a(3) =55438a(4) =408222a(5) =2469182a(6) =12741432a(7) =57644194a(8) =233385140a(9) =859145920a(10) =2912085006a(11) =9181289736a(12) =27151590510a(13) =75840301088a(14) =201262238349a(15) =509972027785
External references
- oeis: A224192