Number of nX7 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing.
A223917
Number of nX7 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing.
Terms
- a(0) =239a(1) =9503a(2) =140236a(3) =1226491a(4) =7906972a(5) =41334135a(6) =183720802a(7) =715114500a(8) =2489822632a(9) =7881608430a(10) =22979660094a(11) =62362461624a(12) =158897321204a(13) =382876827441a(14) =877788083326
External references
- oeis: A223917