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A248989
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Number of length 2+4 0..n arrays with every five consecutive terms having two times the sum of some three elements equal to three times the sum of the remaining two
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1
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2, 53, 204, 585, 1654, 4137, 7964, 14661, 23778, 39441, 60264, 90193, 126626, 176141, 239692, 322385, 419046, 539841, 675924, 853485, 1053130, 1293121, 1559752, 1873217, 2232130, 2653637, 3111812, 3639577, 4210230, 4884793, 5609564, 6430901
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=6
..6....5....0....6....0....5....1....2....0....0....1....0....3....3....3....2
..3....0....1....2....3....3....4....2....1....6....4....0....3....3....6....5
..5....2....3....4....1....6....5....4....0....2....5....3....6....1....2....6
..1....1....6....2....5....2....4....3....3....2....2....6....6....3....4....2
..5....2....5....1....6....4....6....4....1....0....3....1....2....0....5....0
..1....0....5....1....5....5....6....2....0....5....1....5....3....3....3....2
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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