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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A189198 Number of 5Xn binary arrays without the pattern 0 0 1 vertically or antidiagonally 1
 20, 400, 6446, 101628, 1579664, 24496092, 379515360, 5878642448, 91053926856, 1410308064720, 21843768123936, 338330131913680, 5240270191277760, 81164599671831296, 1257128330483644640, 19471193573584406720 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 5 of A189196 LINKS R. H. Hardin, Table of n, a(n) for n = 1..200 FORMULA Empirical: a(n) = 20*a(n-1) -60*a(n-2) -208*a(n-3) +844*a(n-4) +344*a(n-5) -3476*a(n-6) +3544*a(n-7) -1056*a(n-8) EXAMPLE Some solutions for 5X3 ..1..1..0....1..1..0....0..1..1....0..1..1....1..0..1....0..0..1....1..0..1 ..0..1..1....1..1..1....0..0..1....0..1..1....1..1..0....0..1..0....0..1..1 ..1..1..1....0..1..0....0..1..1....0..0..0....0..1..1....0..1..1....1..1..1 ..1..1..0....1..1..1....0..0..0....0..0..1....1..1..1....0..1..0....1..0..1 ..0..1..1....0..0..0....0..1..0....0..0..0....0..0..0....0..0..1....0..1..0 CROSSREFS Sequence in context: A083276 A057745 A224386 * A224019 A171294 A267793 Adjacent sequences: A189195 A189196 A189197 * A189199 A189200 A189201 KEYWORD nonn AUTHOR R. H. Hardin Apr 18 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 March 22 16:15 EDT 2023. Contains 361432 sequences. (Running on oeis4.)