The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A183819 T(n,k)=1/81 the number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor 8
 1, 8, 8, 64, 162, 64, 512, 3256, 3256, 512, 4096, 65640, 163208, 65640, 4096, 32768, 1321860, 8231592, 8231592, 1321860, 32768, 262144, 26630220, 414246824, 1042063656, 414246824, 26630220, 262144, 2097152, 536415300, 20864057480 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts .........1.............8...............64................512 .........8...........162.............3256..............65640 ........64..........3256...........163208............8231592 .......512.........65640..........8231592.........1042063656 ......4096.......1321860........414246824.......131467169720 .....32768......26630220......20864057480.....16607782066704 ....262144.....536415300....1050517114472...2096961683069192 ...2097152...10805642100...52900274426120.264820293988996048 ..16777216..217666494900.2663752907479720 .134217728.4384657426500 LINKS R. H. Hardin, Table of n, a(n) for n = 1..70 EXAMPLE Some solutions with upper left block zero for 4X3 ..0..0..0....0..0..1....0..0..1....0..0..1....0..0..0....0..0..1....0..0..1 ..0..0..2....0..0..0....0..0..2....0..0..1....0..0..1....0..0..0....0..0..1 ..1..0..1....0..2..1....1..2..0....1..1..0....2..1..1....2..1..0....1..1..2 ..2..1..1....1..2..2....1..1..0....0..1..1....0..2..0....0..2..2....2..0..2 CROSSREFS Column 1 is A001018(n-1) Sequence in context: A222957 A038286 A245133 * A215271 A202916 A165426 Adjacent sequences: A183816 A183817 A183818 * A183820 A183821 A183822 KEYWORD nonn,tabl AUTHOR R. H. Hardin Jan 07 2011 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.

Last modified May 18 16:47 EDT 2024. Contains 372664 sequences. (Running on oeis4.)