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!)
A254722 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and the central column and the two medians of the diagonal and antidiagonal nondecreasing horizontally and vertically 1
2630, 14226, 76615, 364039, 1645201, 7620738, 35110289, 160937385, 741804750, 3423993877, 15810300788, 73052896500, 337690620252, 1561140321305, 7217837292719, 33373602812501, 154315577978901, 713547491791682 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A254728

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 75

FORMULA

Empirical recurrence of order 75 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A020439 A254776 A254769 * A236502 A212605 A273184

Adjacent sequences:  A254719 A254720 A254721 * A254723 A254724 A254725

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 06 2015

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 23 14:44 EST 2022. Contains 350513 sequences. (Running on oeis4.)