A249229 - OEIS

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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.

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

Cf. A249233.

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