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 A212864 Number of nondecreasing sequences of n 1..4 integers with no element dividing the sequence sum 1
 0, 2, 3, 5, 6, 9, 12, 15, 17, 22, 26, 30, 34, 40, 45, 51, 56, 63, 70, 77, 83, 92, 100, 108, 116, 126, 135, 145, 154, 165, 176, 187, 197, 210, 222, 234, 246, 260, 273, 287, 300, 315, 330, 345, 359, 376, 392, 408, 424, 442, 459, 477, 494, 513, 532, 551, 569, 590, 610, 630, 650 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 4 of A212868 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = a(n-1) +a(n-3) -a(n-5) -a(n-7) +a(n-8) EXAMPLE All solutions for n=8 ..2....2....2....2....2....2....3....2....2....3....2....2....2....3....3 ..2....3....2....2....2....2....3....2....3....3....2....3....2....4....3 ..3....3....2....2....2....2....3....3....4....3....2....3....2....4....3 ..3....3....2....2....2....2....3....3....4....3....3....3....3....4....4 ..3....3....3....2....2....2....3....3....4....3....4....3....3....4....4 ..3....3....4....2....2....3....3....4....4....3....4....3....3....4....4 ..3....3....4....3....2....3....4....4....4....3....4....4....4....4....4 ..4....3....4....4....3....3....4....4....4....4....4....4....4....4....4 CROSSREFS Sequence in context: A166247 A126785 A283768 * A026317 A008768 A067593 Adjacent sequences:  A212861 A212862 A212863 * A212865 A212866 A212867 KEYWORD nonn AUTHOR R. H. Hardin May 29 2012 STATUS approved

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