The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A231798 Number of (n+1)X(n+1) 0..1 arrays with no element having a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors equal to one 0
 5, 61, 1699, 157633, 55365917, 49517022951, 136680218773938, 1238966901352323684, 33422575469205248761449, 2727001865924519366481416822 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A231806 LINKS EXAMPLE Some solutions for n=4 ..0..0..0..0..1....0..0..1..0..0....0..1..0..0..0....0..0..1..0..0 ..1..0..1..0..0....0..0..0..1..0....0..0..0..1..0....0..0..0..0..0 ..0..0..0..0..0....0..0..1..0..0....0..0..0..0..1....0..0..1..0..0 ..0..0..0..0..1....0..0..0..0..1....0..0..1..0..0....0..0..0..0..1 ..1..0..0..0..0....0..1..1..0..0....1..0..0..0..0....1..0..1..0..0 CROSSREFS Sequence in context: A000364 A028296 A159316 * A258672 A326571 A201254 Adjacent sequences:  A231795 A231796 A231797 * A231799 A231800 A231801 KEYWORD nonn AUTHOR R. H. Hardin, Nov 13 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 December 8 09:02 EST 2021. Contains 349594 sequences. (Running on oeis4.)