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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A235830 Number of (n+1)X(3+1) 0..2 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise 1
3459, 112146, 3294824, 87276535, 2183863895, 51823058334, 1185755777410, 26334832022372, 572263357672413, 12229158329776181, 258153994196342883, 5400693894523672170, 112258618931005108819, 2322750011465102542819 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A235833

LINKS

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

EXAMPLE

Some solutions for n=2

..2..0..2..1....2..1..1..2....0..2..2..0....2..0..1..2....2..2..1..0

..1..2..2..0....0..0..1..0....0..0..0..2....1..0..2..2....1..1..0..2

..1..1..2..2....0..2..1..1....0..2..1..1....2..1..1..2....2..1..1..1

CROSSREFS

Sequence in context: A082242 A321866 A235835 * A235586 A252967 A252959

Adjacent sequences:  A235827 A235828 A235829 * A235831 A235832 A235833

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 16 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 December 3 20:35 EST 2020. Contains 338920 sequences. (Running on oeis4.)