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!)
A235259 Number of (n+1)X(2+1) 0..3 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise 1
2400, 75744, 2691067, 64470056, 1538378437, 27988093692, 507441199620, 7534804140934, 111681101728373, 1415861956568375, 17929576294589042, 199950651421904706, 2227935030929519936, 22325110214811735679 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A235261

LINKS

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

EXAMPLE

Some solutions for n=2

..0..2..3....1..0..1....0..0..3....0..2..2....3..0..3....2..0..0....0..3..0

..2..3..0....1..1..3....0..1..2....2..1..1....0..0..1....0..2..2....1..3..2

..2..2..0....3..0..3....3..2..3....3..3..0....0..3..0....2..2..0....3..3..3

CROSSREFS

Sequence in context: A236084 A204304 A235414 * A321638 A005073 A176767

Adjacent sequences:  A235256 A235257 A235258 * A235260 A235261 A235262

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 05 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 September 23 20:31 EDT 2021. Contains 347617 sequences. (Running on oeis4.)