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A249229 Number of length n+5 0..4 arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four 1
10620, 36880, 128436, 448148, 1566052, 5479172, 19188990, 67392884, 236812732, 832339890, 2925863658, 10285884920, 36163850136, 127208446490, 447538047006, 1574600351516, 5540083564394, 19492125637516, 68581278998890 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A249233

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

..4....0....0....0....3....2....0....0....4....4....2....2....1....1....3....0

..1....0....4....2....2....4....1....1....0....0....2....3....3....2....0....3

..1....4....2....4....0....2....4....3....1....3....2....3....1....1....2....0

..1....1....4....3....3....3....0....2....0....0....2....1....2....0....2....0

..2....1....3....4....2....4....2....1....3....2....2....2....3....3....3....0

..2....2....3....3....3....4....3....3....3....4....4....3....1....4....4....3

..0....3....4....1....3....0....0....4....1....2....4....4....0....1....2....1

..4....0....4....4....0....0....4....4....2....3....0....4....1....1....0....1

CROSSREFS

Sequence in context: A031864 A184092 A110018 * A105304 A009421 A013817

Adjacent sequences:  A249226 A249227 A249228 * A249230 A249231 A249232

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 23 2014

STATUS

approved

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Last modified January 23 22:46 EST 2022. Contains 350515 sequences. (Running on oeis4.)