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A249005
Number of length 4+4 0..n arrays with no five consecutive terms having two times the sum of any three elements equal to three times the sum of the remaining two
1
216, 2802, 28240, 172888, 822348, 2865126, 8902860, 23177368, 55906496, 122921570, 254998668, 492803174, 916912140, 1618570176, 2775224082, 4580364152, 7372967710, 11513855042, 17636594106, 26371506592, 38792087628
OFFSET
1,1
COMMENTS
Row 4 of A249001
LINKS
EXAMPLE
Some solutions for n=4
..0....0....2....0....0....0....1....0....2....0....2....0....0....2....0....1
..1....1....3....3....4....1....3....3....3....4....3....0....1....2....1....4
..0....4....1....1....3....0....0....0....4....1....3....3....1....0....0....3
..0....1....4....0....4....2....4....4....4....0....2....4....4....4....0....2
..1....0....3....0....2....0....1....1....0....0....4....1....3....4....4....3
..2....0....0....0....1....0....0....0....1....1....0....3....2....4....0....0
..3....0....4....4....3....0....3....0....0....4....2....1....1....0....0....1
..0....4....3....3....1....4....3....2....0....3....0....3....3....2....2....1
CROSSREFS
Sequence in context: A017055 A299859 A017139 * A249470 A251359 A251352
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 18 2014
STATUS
approved