Number of nX5 0..2 arrays with rows and columns lexicographically nondecreasing read forwards and nonincreasing read backwards.
A201697
Number of nX5 0..2 arrays with rows and columns lexicographically nondecreasing read forwards and nonincreasing read backwards.
Terms
- a(0) =3a(1) =37a(2) =989a(3) =35390a(4) =930564a(5) =14268351a(6) =142436489a(7) =1034563890a(8) =5898023820a(9) =27803725006a(10) =112491133042a(11) =401503571755
External references
- oeis: A201697