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 A184754 Half the number of n X n binary arrays with no 1 having an adjacent 1 both above and to its left 1
 1, 7, 163, 12397, 3110914, 2568513843, 6982256142285, 62483420093901107, 1840782554883258104105, 178527915853668578288219231, 57000185549334885919706636039360, 59911857895558455825087768017439269698 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A184761 LINKS R. H. Hardin, Table of n, a(n) for n = 1..19 EXAMPLE Some solutions for 3X3 ..1..1..0....1..1..1....1..1..0....1..0..1....1..0..1....0..0..1....0..1..1 ..0..1..0....1..0..1....0..1..1....1..1..0....1..0..1....0..0..0....1..0..1 ..0..1..0....1..1..0....1..0..0....0..0..0....1..0..0....1..1..0....0..0..0 CROSSREFS Sequence in context: A212856 A351610 A169608 * A160241 A020998 A012504 Adjacent sequences: A184751 A184752 A184753 * A184755 A184756 A184757 KEYWORD nonn AUTHOR R. H. Hardin Jan 21 2011 STATUS approved

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Last modified December 7 15:01 EST 2022. Contains 358667 sequences. (Running on oeis4.)