A267641 Number of nX5 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.
7, 98, 429, 2887, 8917, 47715, 128441, 647101, 1614281, 8168679, 19332185, 101212349, 229707509, 1260768903, 2761416109, 15947280405, 33873126897, 205385367891, 424974329569, 2690957511285, 5447493560049, 35782122811899
Offset: 1
Keywords
Examples
Some solutions for n=6 ..0..1..1..0..1....0..0..1..0..1....0..1..0..1..1....0..1..0..1..0 ..0..1..0..1..0....1..0..0..1..0....1..0..1..0..1....1..0..1..0..1 ..1..0..1..0..1....0..1..1..0..1....0..1..1..0..0....0..1..0..1..0 ..0..0..1..1..0....1..0..1..0..0....1..0..0..1..0....1..0..1..0..1 ..1..1..0..1..0....0..1..0..1..0....0..0..1..0..1....1..1..0..0..1 ..1..0..1..0..1....0..1..1..0..1....1..1..0..1..0....0..0..1..1..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
- R. H. Hardin, Empirical recurrence of order 93
Crossrefs
Cf. A267644.
Formula
Empirical recurrence of order 93 (see link above)
Comments