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 A229399 Number of nX5 0..2 arrays with top left element 0, horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and antidiagonal differences never 0 1
 16, 89, 536, 3357, 21464, 138645, 899860, 5852687, 38099072, 248105251, 1615963560, 10525963187, 68565944112, 446645329321, 2909516286464, 18953111619005, 123464205731360, 804270242627253, 5239177554585924 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 5 of A229402 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 17*a(n-1) -120*a(n-2) +505*a(n-3) -1511*a(n-4) +3524*a(n-5) -6668*a(n-6) +10300*a(n-7) -12840*a(n-8) +12612*a(n-9) -9484*a(n-10) +5308*a(n-11) -2151*a(n-12) +615*a(n-13) -120*a(n-14) +15*a(n-15) -a(n-16) EXAMPLE Some solutions for n=4 ..0..2..1..1..1....0..2..1..1..1....0..2..1..1..0....0..0..0..2..1 ..1..0..2..2..1....1..0..2..2..2....1..0..2..2..1....1..1..0..0..2 ..1..1..0..2..1....1..0..0..0..2....2..1..0..2..2....2..1..1..1..0 ..2..1..0..2..2....1..1..1..0..0....0..2..1..0..0....2..2..2..1..1 CROSSREFS Sequence in context: A208640 A301888 A302084 * A269078 A240262 A264531 Adjacent sequences: A229396 A229397 A229398 * A229400 A229401 A229402 KEYWORD nonn AUTHOR R. H. Hardin Sep 22 2013 STATUS approved

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Last modified December 7 08:09 EST 2023. Contains 367630 sequences. (Running on oeis4.)