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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A257267 Number of (n+2)X(2+2) 0..2 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum 1
 119716, 2292196, 29746116, 380991361, 3966480400, 40331082276, 361698799396, 3170981525625, 25610765461264, 202919084831089, 1519992095029776, 11211245053949889, 79474991441000464, 556561574072997025 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A257270 LINKS R. H. Hardin, Table of n, a(n) for n = 1..175 EXAMPLE Some solutions for n=1 ..2..1..1..0....2..1..1..0....0..2..0..1....2..1..0..0....2..2..0..0 ..0..0..2..0....2..1..1..0....1..2..0..1....0..1..1..1....1..2..1..0 ..2..2..2..1....0..1..2..1....2..2..2..2....1..2..0..1....1..1..0..2 CROSSREFS Cf. A257270 Sequence in context: A263083 A250151 A257381 * A175581 A031664 A234736 Adjacent sequences:  A257264 A257265 A257266 * A257268 A257269 A257270 KEYWORD nonn AUTHOR R. H. Hardin, Apr 19 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 June 25 18:38 EDT 2022. Contains 354851 sequences. (Running on oeis4.)