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 A183291 Number of nXnXnXn triangular pyramidal binary arrays with the number of 0-0 adjacencies equal to the number of 0-1 adjacencies 0
 2, 5, 75, 29721, 331189203 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..5. EXAMPLE Some solutions for 3X3X3X3 ....0......1......0......0......0......1......0......0......1......0......1 ... ....0......1......0......0......1......0......0......1......0......0......0 ...0.1....0.0....0.0....0.1....0.0....0.0....0.0....0.0....0.1....0.0....0.0 ... ....1......0......1......0......0......1......1......0......0......1......0 ...0.1....0.1....1.0....0.0....0.0....0.0....0.0....0.0....0.0....1.1....1.0 ..0.0.0..0.0.0..1.0.1..1.1.0..0.1.0..1.0.1..1.1.1..1.0.1..0.1.0..0.0.1..0.0.1 CROSSREFS Sequence in context: A172037 A301993 A128297 * A372482 A254405 A216847 Adjacent sequences: A183288 A183289 A183290 * A183292 A183293 A183294 KEYWORD nonn AUTHOR R. H. Hardin Jan 03 2011 STATUS approved

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Last modified September 15 08:55 EDT 2024. Contains 375932 sequences. (Running on oeis4.)