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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A221896 Number of nX4 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out straight through or left turns 1
 13, 2241, 236532, 25821731, 2814706089, 307131177266, 33498766685333, 3653989849310339, 398568427571535443, 43474867097541833158, 4742132126980966864298, 517260183698295861792396 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A221898 LINKS R. H. Hardin, Table of n, a(n) for n = 1..58 EXAMPLE Some solutions for n=3 ..1..2..1..0....1..0..2..1....0..2..2..0....0..1..0..2....1..1..0..0 ..0..1..1..2....0..3..1..1....1..0..0..1....2..3..0..1....0..2..4..1 ..1..0..3..0....0..1..2..0....0..5..0..1....0..2..0..1....1..1..0..1 CROSSREFS Sequence in context: A221927 A013718 A145187 * A209468 A270872 A141077 Adjacent sequences:  A221893 A221894 A221895 * A221897 A221898 A221899 KEYWORD nonn AUTHOR R. H. Hardin Jan 30 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 January 19 06:18 EST 2022. Contains 350464 sequences. (Running on oeis4.)