A223634 Number of nX5 0..1 arrays with rows, antidiagonals and columns unimodal.
16, 256, 2297, 13599, 61545, 230619, 748950, 2171533, 5738616, 14032520, 32116856, 69421945, 142742110, 280837253, 531285626, 970419825, 1717396652, 2953706474, 4949721932, 8100222189, 12971210226, 20360769871, 31377189150, 47538110053
Offset: 1
Keywords
Examples
Some solutions for n=4 ..0..0..0..1..1....0..1..1..0..0....0..0..0..0..0....0..0..0..0..0 ..0..0..1..1..0....1..1..1..1..1....0..0..1..1..0....0..0..0..1..1 ..0..1..1..1..0....1..1..1..1..1....0..0..0..1..0....0..0..1..1..0 ..0..0..1..1..0....0..0..1..0..0....0..0..0..0..1....1..1..1..1..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Comments