Number of nX5 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.
A278673
Number of nX5 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.
Terms
- a(0) =20a(1) =245a(2) =1801a(3) =10584a(4) =55854a(5) =280616a(6) =1378241a(7) =6654535a(8) =31404174a(9) =143558071a(10) =630909284a(11) =2653428584a(12) =10658877991a(13) =40894491453a(14) =150023824702a(15) =527191888255
External references
- oeis: A278673