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 A248535 Number of length n+3 0..6 arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth 1
 331, 427, 555, 715, 907, 1219, 1635, 2167, 2827, 3895, 5307, 7111, 9355, 13051, 17931, 24151, 31867, 44815, 61923, 83683, 110587, 156583, 217419, 294643, 389803, 555535, 774963, 1052959, 1394395, 1999867, 2802291, 3817003, 5059339, 7300363, 10273059 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 6 of A248537 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = a(n-1) +8*a(n-4) -8*a(n-5) -19*a(n-8) +19*a(n-9) +13*a(n-12) -13*a(n-13) -4*a(n-16) +4*a(n-17) EXAMPLE Some solutions for n=6 ..3....6....3....2....1....5....4....3....4....5....5....2....6....4....5....1 ..3....4....0....5....2....3....6....2....1....2....4....6....4....3....4....5 ..6....0....3....1....0....2....1....6....1....3....4....1....1....3....6....3 ..0....6....6....0....5....2....5....1....2....2....3....3....5....2....1....3 ..3....6....3....2....1....5....4....3....0....1....5....2....6....4....5....1 ..3....4....0....1....2....3....6....2....5....2....4....2....4....3....4....5 ..2....0....3....1....0....2....5....6....1....3....4....1....1....3....6....3 ..0....6....2....0....1....2....1....1....2....6....3....3....5....6....5....3 ..3....6....3....2....1....5....4....3....0....1....5....2....6....0....5....1 CROSSREFS Sequence in context: A179400 A139657 A140000 * A142763 A020373 A142601 Adjacent sequences: A248532 A248533 A248534 * A248536 A248537 A248538 KEYWORD nonn AUTHOR R. H. Hardin, Oct 08 2014 STATUS approved

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Last modified September 22 10:53 EDT 2023. Contains 365520 sequences. (Running on oeis4.)