This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A221203 Number of 4Xn arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2 1
 0, 289, 212, 427716, 4984812, 1026177156, 30374196832, 3043294206016, 133567666236732, 10038761087929924, 525060302368983108, 34891927404610766400, 1974298747702764055248, 124298442666315631470276 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 4 of A221200 LINKS R. H. Hardin, Table of n, a(n) for n = 1..15 EXAMPLE Some solutions for n=3 ..1..2..0....0..2..2....0..2..2....0..2..0....0..2..0....0..2..1....0..2..1 ..0..2..0....0..2..1....0..2..0....1..2..1....2..2..1....2..2..0....0..2..1 ..0..2..2....0..2..1....0..2..1....2..2..0....0..2..0....0..2..0....1..2..0 ..1..2..0....0..2..0....1..2..0....0..2..0....1..2..0....1..2..0....0..2..1 CROSSREFS Sequence in context: A306651 A272164 A107739 * A188367 A184046 A235810 Adjacent sequences:  A221200 A221201 A221202 * A221204 A221205 A221206 KEYWORD nonn AUTHOR R. H. Hardin Jan 04 2013 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.

Last modified October 15 10:46 EDT 2019. Contains 328026 sequences. (Running on oeis4.)