A267642 Number of nX6 0..1 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.
11, 242, 1353, 12623, 47715, 343145, 1117207, 7479533, 22499181, 150415627, 429242911, 2954085199, 8086558295, 58043181513, 153186588731, 1151896473495, 2939148319421, 23154681921613, 57239339798173, 471401152901559
Offset: 1
Keywords
Examples
Some solutions for n=5 ..0..0..1..0..1..0....0..1..0..0..1..0....0..1..0..1..1..0....0..1..0..1..1..0 ..1..0..1..0..1..0....0..0..1..0..1..1....1..0..1..1..0..1....0..0..1..1..0..0 ..0..1..0..1..0..1....1..0..1..1..0..0....1..1..0..0..1..0....1..1..0..0..1..1 ..1..0..0..1..1..0....0..1..0..1..1..0....0..0..1..0..1..0....1..1..0..0..1..1 ..0..1..1..0..0..1....1..0..1..0..0..1....1..1..0..1..0..1....0..0..1..1..0..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A267644.
Comments