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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A267265 Number of 4Xn arrays containing n copies of 0..4-1 with every element equal to or 1 greater than any north, northeast or northwest neighbors modulo 4 and the upper left element equal to 0. 1
1, 1, 1, 1, 1, 1, 1, 9, 87, 865, 7649, 61021, 458527, 3292439, 22907789, 155639305, 1038112235, 6824466823, 44346420219, 285480376511, 1823828784941, 11579358641469, 73141158203461, 460054937791477, 2883707639144059 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,8

COMMENTS

Row 4 of A267264.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..31

EXAMPLE

Some solutions for n=12

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

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

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

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

CROSSREFS

Cf. A267264.

Sequence in context: A144852 A153191 A223277 * A152264 A035101 A245491

Adjacent sequences:  A267262 A267263 A267264 * A267266 A267267 A267268

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 12 2016

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 9 22:27 EST 2019. Contains 329880 sequences. (Running on oeis4.)