The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A253732 Number of (n+2)X(n+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically 0
 218, 1888, 7216, 54688, 400068, 3369876, 40265740, 774250356, 16204708792, 401697467244, 13688214787176, 637511964938288, 35097886281624988 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A253740 LINKS Table of n, a(n) for n=1..13. EXAMPLE Some solutions for n=4 ..0..1..0..1..0..1....0..1..0..1..1..0....1..0..1..0..0..0....0..0..0..1..0..1 ..1..0..1..0..1..0....0..0..1..0..1..0....1..1..0..1..0..0....0..0..1..0..1..1 ..0..1..1..1..0..1....0..0..0..1..0..1....1..1..1..0..1..0....0..1..0..0..0..1 ..1..0..1..1..1..0....1..0..0..0..1..0....0..1..1..1..0..1....1..0..0..0..1..0 ..0..1..0..1..0..1....0..1..0..0..0..1....1..0..1..1..1..0....0..1..0..1..0..0 ..1..1..1..1..1..1....1..0..1..0..0..0....1..1..0..1..0..1....0..0..1..0..1..1 CROSSREFS Sequence in context: A241102 A292545 A321115 * A232513 A224741 A209824 Adjacent sequences: A253729 A253730 A253731 * A253733 A253734 A253735 KEYWORD nonn AUTHOR R. H. Hardin, Jan 11 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 May 22 06:48 EDT 2024. Contains 372743 sequences. (Running on oeis4.)