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 A232409 Number of (n+1) X (3+1) 0..2 arrays with every element both >= and <= some horizontal, diagonal or antidiagonal neighbor. 1
 973, 44971, 2189991, 107913855, 5322933313, 262249675165, 12924602609687, 636974571589143, 31392224093121163, 1547115367969767881, 76247135423218512743, 3757719192867286695513, 185193231246257132276941 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A232414. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 64 FORMULA Empirical recurrence of order 64 (see link above). EXAMPLE Some solutions for n=2 ..1..2..1..1....1..2..1..2....2..0..2..0....1..1..2..2....1..1..2..1 ..1..1..2..1....2..1..2..1....2..2..0..2....1..0..1..2....2..2..0..2 ..2..2..0..0....1..1..1..1....2..1..1..0....0..1..0..1....2..2..0..0 CROSSREFS Cf. A232414. Sequence in context: A203030 A209045 A209017 * A275060 A251837 A251838 Adjacent sequences: A232406 A232407 A232408 * A232410 A232411 A232412 KEYWORD nonn AUTHOR R. H. Hardin, Nov 23 2013 STATUS approved

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Last modified April 1 03:44 EDT 2023. Contains 361673 sequences. (Running on oeis4.)