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!)
A265174 Number of nX2 0..n*2-1 arrays with upper left zero and lower right n*2-1 and each element differing from its horizontal and vertical neighbors by a power of two. 1
1, 4, 21, 139, 8463, 219995, 6639203, 149441692, 6260685646, 183876714594, 6508183174645, 200502557111619, 7365189521794194, 232750786457812689, 7646516518149412694, 242109459701672908262, 12925753804930923765113 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 2 of A265178.
LINKS
EXAMPLE
Some solutions for n=4
..0..4....0..2....0..1....0..2....0..1....0..4....0..2....0..1....0..4....0..1
..1..5....2..6....1..5....2..3....4..5....1..2....2..4....4..5....4..5....4..2
..2..6....6..5....2..3....4..5....5..6....5..6....4..6....2..3....5..3....5..3
..3..7....5..7....3..7....3..7....3..7....3..7....6..7....3..7....6..7....6..7
CROSSREFS
Cf. A265178.
Sequence in context: A180399 A349534 A222058 * A087761 A245503 A120368
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 03 2015
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 June 22 10:49 EDT 2024. Contains 373570 sequences. (Running on oeis4.)