A266183 T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no element plus any diagonal or antidiagonal neighbor equal to n-1.
1, 1, 2, 1, 2, 6, 1, 2, 22, 24, 1, 2, 88, 384, 120, 1, 2, 296, 7768, 19080, 720, 1, 2, 1372, 226296, 4027960, 1019328, 5040, 1, 2, 6128, 7089448, 1203241488, 2437859280, 106546608, 40320, 1, 2, 29552, 253282792, 409870443648, 8822224268688
Offset: 1
Examples
Some solutions for n=3 k=4 ..2..0..1..0....0..2..1..2....2..1..0..0....1..2..0..1....0..2..2..0 ..1..2..1..0....1..0..2..0....2..1..0..1....2..0..2..0....1..1..1..1 ..2..0..1..2....1..2..0..1....2..1..2..0....1..1..0..2....2..2..0..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..49
Comments