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 A266020 Number of nX3 integer arrays with each element equal to the number of horizontal, vertical and antidiagonal neighbors exactly one smaller than itself. 1
 4, 14, 33, 91, 316, 1045, 3394, 11102, 36842, 122052, 402200, 1324463, 4373322, 14443892, 47671729, 157325046, 519327402, 1714258173, 5658200079, 18676187387, 61646837018, 203484164638, 671655360694, 2216987948652, 7317807541625 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A266025. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 94 FORMULA Empirical recurrence of order 94 (see link above) EXAMPLE Some solutions for n=4 ..2..1..1....1..0..0....1..0..1....1..0..0....0..1..2....1..0..0....0..0..0 ..1..0..1....2..0..0....2..2..2....2..2..1....2..1..0....1..2..0....0..2..1 ..2..1..1....1..2..0....1..2..1....1..2..2....2..2..0....2..1..2....0..1..1 ..2..1..0....2..1..1....0..0..1....0..0..1....1..0..0....2..1..0....1..1..0 CROSSREFS Cf. A266025. Sequence in context: A322009 A228272 A011935 * A185441 A032645 A098942 Adjacent sequences:  A266017 A266018 A266019 * A266021 A266022 A266023 KEYWORD nonn AUTHOR R. H. Hardin, Dec 20 2015 STATUS approved

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Last modified September 23 19:41 EDT 2020. Contains 337315 sequences. (Running on oeis4.)