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 A166841 Number of nX2 1..7 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in decreasing order. 0
 0, 0, 0, 714, 10101, 67447, 306568, 1094952, 3307774, 8826726, 21395896, 48023298, 101190323, 202226037, 386323080 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS EXAMPLE Some solutions for n=4 ...2.1...3.1...2.1...3.2...3.2...2.1...2.1...4.1...5.4...3.2...3.1...3.2...3.2 ...5.4...4.1...3.4...4.1...4.6...2.3...5.4...5.3...6.1...4.1...5.4...5.5...4.6 ...7.3...5.7...5.6...6.6...5.5...4.5...6.3...5.6...6.3...5.1...5.7...6.1...5.1 ...7.6...6.2...5.7...7.5...7.1...7.6...7.7...7.2...7.2...6.7...6.2...7.4...5.7 ------ ...2.1...3.1...3.2...4.1...2.1...2.2...3.1...3.1...4.2...3.2...3.2...2.1...2.1 ...5.4...5.2...3.6...5.6...2.4...4.1...3.6...3.7...4.3...3.4...3.4...4.3...2.7 ...5.6...5.7...5.1...7.2...5.6...6.5...5.4...4.5...6.1...5.1...6.1...6.6...4.3 ...7.3...6.4...7.4...7.3...7.3...7.3...7.2...6.2...7.5...7.6...7.5...7.5...6.5 CROSSREFS Sequence in context: A220593 A187283 A187280 * A166829 A005467 A214186 Adjacent sequences:  A166838 A166839 A166840 * A166842 A166843 A166844 KEYWORD nonn AUTHOR R. H. Hardin Oct 21 2009 STATUS approved

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Last modified May 21 18:02 EDT 2013. Contains 225504 sequences.