login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A235411 Number of (n+1)X(6+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise 1
1482, 21707, 397340, 7379380, 145005714, 2573684600, 48150637857, 775525688659, 13190905086499, 190687328015653, 2907739241384590, 37858518417810848, 519021821368183677, 6140452349020498860, 76333242984438248154 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A235413

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..37

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A252366 A253324 A204037 * A238253 A035864 A255087

Adjacent sequences:  A235408 A235409 A235410 * A235412 A235413 A235414

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 10 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 August 21 18:26 EDT 2019. Contains 326168 sequences. (Running on oeis4.)