login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A251193 Number of (n+1)X(n+1) 0..1 arrays with no 2X2 subblock having the minimum of its diagonal elements less than the absolute difference of its antidiagonal elements 1
10, 86, 1654, 73170, 7392190, 1688254298, 871573835362, 1016396169840162, 2677928828235940878, 15939286491629789077436, 214333474893685389914820434, 6511102783725658099829377229314, 446854251204340727817177223022169346 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A251201

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..20

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A321853 A264174 A218894 * A198858 A331793 A121115

Adjacent sequences:  A251190 A251191 A251192 * A251194 A251195 A251196

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 30 2014

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 26 09:41 EST 2022. Contains 350598 sequences. (Running on oeis4.)