login
The OEIS is supported by the many generous donors to the OEIS Foundation.
A202711
Number of n X n 0..1 arrays with row sums equal and no column sum equal to the previous
0
2, 2, 38, 838, 75302, 27842760, 37121438930, 192513188823366
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 1 of A202714
LINKS
Table of n, a(n) for n=1..8.
EXAMPLE
Some solutions for n=5
..0..1..0..1..1....1..1..0..1..0....1..0..1..0..0....1..0..1..0..0
..1..1..0..1..0....1..1..0..1..0....0..1..0..1..0....0..1..0..0..1
..0..0..1..1..1....1..1..0..0..1....1..0..1..0..0....0..1..0..0..1
..1..0..1..0..1....0..1..1..0..1....0..1..1..0..0....0..1..1..0..0
..1..0..1..1..0....1..1..0..0..1....1..0..0..1..0....0..0..0..1..1
CROSSREFS
Sequence in context: A059523 A038623 A001121 * A222668 A210246 A116567
Adjacent sequences: A202708 A202709 A202710 * A202712 A202713 A202714
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 23 2011
STATUS
approved

Lookup Welcome Wiki Register Music Plot 2 Demos Index WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified October 12 03:22 EDT 2024. Contains 376662 sequences.
License Agreements, Terms of Use, Privacy Policy