login
A250425
Number of (n+1) X (n+1) 0..1 arrays with nondecreasing sum of every two consecutive values in every row and column.
1
16, 108, 1296, 12000, 160000, 1715000, 24010000, 280052640, 4032758016, 49700008512, 728933458176, 9337998878208, 138735983333376, 1829038842774000, 27435582641610000, 369797030228340000, 5588044012339360000
OFFSET
1,1
COMMENTS
Diagonal of A250432.
LINKS
FORMULA
a(n+1) = A202092(n). - R. J. Mathar, Dec 04 2014
EXAMPLE
Some solutions for n=5
..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..1..0
..0..0..0..0..1..0....0..0..0..1..0..1....0..0..0..0..1..1....0..0..0..1..1..1
..0..0..0..1..1..1....0..0..0..0..1..1....0..0..0..1..1..1....1..0..1..0..1..1
..0..0..0..0..1..0....0..0..0..1..1..1....0..1..1..1..1..1....0..1..0..1..1..1
..1..1..1..1..1..1....1..0..1..0..1..1....1..1..1..1..1..1....1..0..1..0..1..1
..0..0..0..1..1..1....1..0..1..1..1..1....0..1..1..1..1..1....0..1..0..1..1..1
CROSSREFS
Sequence in context: A269188 A165558 A337391 * A238171 A155871 A120668
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 22 2014
STATUS
approved