login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A253818 Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally and vertically 1
618856, 2008068, 5735723, 19866443, 75927303, 250052478, 681245242, 1390601653, 3467027641, 8832217221, 24155618827, 62298137597, 169253832792, 473982068000, 1360760065340, 3933485046506, 11262362192707, 32471019464156 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A253820

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..135

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A238053 A254802 A254809 * A236064 A204052 A161533

Adjacent sequences:  A253815 A253816 A253817 * A253819 A253820 A253821

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 14 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 July 10 10:17 EDT 2020. Contains 335576 sequences. (Running on oeis4.)