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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A253833 Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
 512, 6339, 52014, 284109, 156876, 295098, 262418, 218499, 347440, 571191, 845552, 1524398, 2858410, 5021094, 9662090, 18996817, 36633058, 72806768, 145731460, 290387182, 583234472, 1173787454, 2359763404, 4752830758, 9577047474 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A253841 LINKS R. H. Hardin, Table of n, a(n) for n = 1..29 EXAMPLE Some solutions for n=3 ..0..1..1..1..0....0..1..1..0..0....1..1..1..0..1....0..0..0..0..0 ..0..0..0..0..1....1..0..1..1..1....0..0..1..0..1....1..0..0..0..1 ..0..1..1..0..1....0..0..0..0..0....0..0..1..0..0....0..0..0..0..1 ..0..0..1..1..1....0..1..1..1..0....1..1..1..1..1....0..0..0..1..1 ..1..0..1..0..0....1..1..0..0..1....1..1..0..1..1....1..1..1..1..1 CROSSREFS Sequence in context: A017367 A254899 A258999 * A017487 A263034 A254012 Adjacent sequences: A253830 A253831 A253832 * A253834 A253835 A253836 KEYWORD nonn AUTHOR R. H. Hardin, Jan 16 2015 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 July 18 16:59 EDT 2024. Contains 374388 sequences. (Running on oeis4.)