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 A247989 Number of length n+5 0..2 arrays with no disjoint triples in any consecutive six terms having the same sum 1
 396, 702, 1264, 2314, 4308, 8150, 15640, 30620, 60192, 118756, 235048, 466476, 927792, 1850424, 3692608, 7372360, 14725200, 29421656, 58802272, 117563504, 235061376, 470020240, 939884704, 1879539888, 3758751936, 7517176032 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A247995 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 2*a(n-1) +10*a(n-6) -20*a(n-7) -16*a(n-12) +32*a(n-13) EXAMPLE Some solutions for n=6 ..1....2....2....2....2....2....0....2....0....0....2....0....1....2....0....2 ..0....2....1....0....0....1....2....0....2....0....0....0....0....0....2....1 ..2....2....2....0....2....2....2....2....2....0....0....1....2....0....2....1 ..0....2....2....0....2....2....0....0....0....2....1....2....2....2....0....0 ..2....1....0....2....1....0....0....2....2....1....2....0....2....0....1....2 ..2....0....2....2....0....0....1....1....0....2....0....2....2....2....0....1 ..1....2....2....1....2....2....2....2....0....2....2....0....2....1....0....0 ..0....0....1....2....0....0....0....0....1....2....0....2....1....0....2....1 ..2....2....0....2....2....2....0....0....0....2....2....0....0....2....2....1 ..0....2....2....2....2....1....2....2....0....0....1....1....2....2....0....0 ..2....1....0....0....0....2....2....0....0....1....2....0....2....0....2....2 CROSSREFS Sequence in context: A278269 A278606 A230450 * A126078 A275171 A028299 Adjacent sequences:  A247986 A247987 A247988 * A247990 A247991 A247992 KEYWORD nonn AUTHOR R. H. Hardin, Sep 28 2014 STATUS approved

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Last modified September 22 02:48 EDT 2021. Contains 347605 sequences. (Running on oeis4.)