The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A223712

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A223712

Number of nX3 0..1 arrays with row sums and column sums unimodal
(history; published version)

#4 by R. H. Hardin at Tue Mar 26 06:23:18 EDT 2013

STATUS

editing

approved

#3 by R. H. Hardin at Tue Mar 26 06:23:14 EDT 2013

LINKS

R. H. Hardin, <a href="/A223712/b223712.txt">Table of n, a(n) for n = 1..116</a>

#2 by R. H. Hardin at Tue Mar 26 06:23:00 EDT 2013

NAME

allocated for R. H. Hardin

Number of nX3 0..1 arrays with row sums and column sums unimodal

DATA

7, 53, 333, 1805, 8953, 41389, 180718, 757748, 3072208, 12100344, 46606802, 176082080, 653863108, 2394225532, 8658131447, 30954618019, 109609761829, 384756220575, 1339683464511, 4632090161405, 15913128409903, 54338332894979

OFFSET

1,1

COMMENTS

Column 3 of A223716

EXAMPLE

Some solutions for n=3

..1..0..1....0..1..0....0..0..0....0..1..1....1..1..0....0..0..0....0..0..1

..0..1..0....1..0..1....0..1..0....0..1..1....1..1..1....0..0..0....1..1..0

..0..1..0....0..1..0....0..1..1....0..0..0....0..0..1....1..0..0....1..1..1

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin Mar 26 2013

STATUS

approved

editing

#1 by R. H. Hardin at Tue Mar 26 06:18:50 EDT 2013

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved