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 A278302 Number of n X n 0..2 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake. 0
 0, 32, 4558, 2360544, 6345491150, 100825279690194, 10174217016822816668, 6850575319751106211878878 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A278309. LINKS EXAMPLE Some solutions for n=3 ..1..2..1. .1..2..2. .1..2..2. .1..1..0. .0..0..1. .0..1..0. .0..0..0 ..2..0..0. .0..0..2. .2..1..2. .1..2..0. .1..0..1. .1..1..2. .1..0..2 ..2..0..2. .2..0..1. .0..1..0. .1..2..0. .2..0..1. .1..2..0. .1..1..1 CROSSREFS Cf. A278309. Sequence in context: A291829 A248075 A248000 * A071310 A265371 A232913 Adjacent sequences:  A278299 A278300 A278301 * A278303 A278304 A278305 KEYWORD nonn AUTHOR R. H. Hardin, Nov 17 2016 STATUS approved

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Last modified August 3 13:55 EDT 2021. Contains 346438 sequences. (Running on oeis4.)