A212935 Number of 6Xn 0..n-1 arrays with no column j greater than column j-1 in all rows.
1, 4095, 386357608, 279128913678335, 916111390974365234376, 10046278068363977051128904352, 300496032699305814168049256913886664, 21222664979041855752064468032655567100514303
Offset: 1
Keywords
Examples
Some solutions for n=3 ..2..0..0....2..2..1....1..0..1....1..0..2....1..1..2....2..2..0....1..0..0 ..0..2..0....2..1..1....2..0..2....1..2..1....0..0..1....0..0..2....1..2..2 ..0..1..1....1..2..1....1..0..2....2..2..1....2..2..2....2..0..0....0..0..0 ..1..0..1....1..1..1....0..1..0....2..0..2....1..2..1....1..0..1....2..0..2 ..2..2..1....1..0..1....0..0..2....2..2..0....0..2..2....1..2..2....2..0..1 ..0..1..1....2..1..2....1..0..0....0..2..1....0..0..2....2..1..2....0..0..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..15
Comments