A267931 Number of nX4 0..3 arrays with every repeated value in every row and column greater than the previous repeated value.
222, 49284, 8459154, 1376175262, 205495778969, 29057389299071, 3909876972823819, 505367954515309174, 63080019343371599302, 7640051013859497535548, 901148367450672524043965
Offset: 1
Keywords
Examples
Some solutions for n=2 ..1..3..2..3....1..1..3..0....0..3..0..2....3..0..3..2....3..1..0..2 ..3..0..3..0....1..0..0..1....2..0..1..3....2..0..0..3....0..2..2..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..45
Crossrefs
Cf. A267933.
Comments