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!)
A235447 Number of (n+1)X(6+1) 0..1 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise 1
9418, 657290, 44920240, 3043145826, 205551169550, 13868068262164, 935263088301396, 63064724124453082, 4252224342324710504, 286706640921161498010, 19331099358385310094498, 1303390076791046628378510 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A235449

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A143367 A234432 A235677 * A068220 A136145 A035792

Adjacent sequences:  A235444 A235445 A235446 * A235448 A235449 A235450

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 May 14 08:44 EDT 2021. Contains 343879 sequences. (Running on oeis4.)