login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A220174 Sum of neighbor maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal, vertical and antidiagonal neighbors in a random 0..2 nX3 array 1
8, 48, 404, 4096, 31744, 262144, 2083808, 16728064, 134217728, 1073741824, 8586101128, 68719476736, 549755813888, 4397962625024, 35184307884032, 281474976710656, 2251796592459776, 18014398509481984, 144115183550922752 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A220177
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0....1..0..1....1..0..0....0..0..0....0..0..0....0..0..1....1..0..0
..0..0..0....0..0..0....0..0..0....0..0..0....1..1..0....0..0..1....0..1..1
..1..1..1....0..0..0....0..1..1....1..1..1....0..1..1....0..0..0....1..1..1
CROSSREFS
Sequence in context: A013186 A165506 A165748 * A239888 A072169 A221668
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 06 2012
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 06:44 EDT 2024. Contains 371265 sequences. (Running on oeis4.)