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A249237 Number of length 4+5 0..n arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four. 1
136, 3888, 60744, 448148, 2325864, 9772492, 34184700, 102003646, 280506352, 694716964, 1591981864, 3441580468, 7017193772, 13588351272, 25335534664, 45379544842, 78550414352, 132184098358, 216354909052, 345309250322 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 4 of A249233.
LINKS
EXAMPLE
Some solutions for n=3
..2....0....1....1....1....0....3....2....0....1....2....3....0....3....0....1
..3....1....2....2....0....3....3....3....3....1....0....3....3....0....2....2
..0....3....0....2....2....2....3....0....0....0....2....3....0....1....3....0
..3....0....0....0....3....0....0....1....0....2....3....3....3....2....2....3
..3....3....2....2....1....0....1....0....0....3....3....3....0....2....2....0
..3....0....0....0....1....0....1....1....3....3....3....1....1....3....1....1
..3....1....0....2....0....0....3....2....0....1....2....1....1....2....1....1
..2....1....3....1....3....2....2....0....2....1....1....3....2....1....2....2
..2....2....2....0....0....0....1....0....2....3....2....3....3....1....0....3
CROSSREFS
Cf. A249233.
Sequence in context: A251940 A071231 A233102 * A194014 A248452 A035819
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 23 2014
STATUS
approved

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Last modified March 29 09:59 EDT 2024. Contains 371268 sequences. (Running on oeis4.)