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 A245992 Number of length n+2 0..5 arrays with no pair in any consecutive three terms totalling exactly 5 1
 126, 534, 2262, 9582, 40590, 171942, 728358, 3085374, 13069854, 55364790, 234529014, 993480846, 4208452398, 17827290438, 75517614150, 319897747038, 1355108602302, 5740332156246, 24316437227286, 103006081065390 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 5 of A245995 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 4*a(n-1) +a(n-2). Empirical: G.f.: -6*x*(21+5*x) / ( -1+4*x+x^2 ). - R. J. Mathar, Aug 10 2014 EXAMPLE Some solutions for n=6 ..3....1....0....1....3....0....0....3....1....1....4....3....1....0....1....4 ..3....2....0....3....5....1....0....3....2....0....3....1....2....2....1....4 ..0....1....0....1....5....0....2....4....2....3....5....3....1....1....3....2 ..4....2....1....1....3....2....1....4....4....3....5....3....2....0....5....0 ..4....5....1....5....1....0....2....2....0....0....2....0....0....1....5....1 ..5....2....5....2....5....2....2....2....3....0....4....0....4....0....4....3 ..5....1....2....5....2....1....4....0....3....0....2....2....2....3....4....1 ..1....2....2....5....2....2....4....2....0....1....0....4....4....0....2....0 CROSSREFS Sequence in context: A154039 A202601 A202594 * A267566 A165023 A186825 Adjacent sequences:  A245989 A245990 A245991 * A245993 A245994 A245995 KEYWORD nonn AUTHOR R. H. Hardin, Aug 09 2014 STATUS approved

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Last modified January 22 07:39 EST 2020. Contains 331139 sequences. (Running on oeis4.)