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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A232344 Number of (n+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal, vertical, diagonal or antidiagonal neighbor 0
 21, 5309, 6753291, 78572361735, 8085496134786969, 7094381639133025682975, 53109062021406984304908116217 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A232352 LINKS Table of n, a(n) for n=1..7. EXAMPLE Some solutions for n=2 ..0..0..0....1..0..0....1..2..0....0..0..1....0..2..0....1..2..2....1..2..2 ..0..2..0....1..2..1....1..2..0....0..1..0....2..0..1....2..0..0....0..0..2 ..1..0..2....2..0..0....2..2..1....1..1..1....0..0..0....1..1..0....1..1..2 CROSSREFS Sequence in context: A220620 A221120 A203370 * A074053 A220552 A275053 Adjacent sequences: A232341 A232342 A232343 * A232345 A232346 A232347 KEYWORD nonn AUTHOR R. H. Hardin, Nov 22 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified February 24 17:27 EST 2024. Contains 370307 sequences. (Running on oeis4.)