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A248467 Number of length 6+2 0..n arrays with no three consecutive terms having the sum of any two elements equal to twice the third 1
68, 576, 14040, 96736, 520788, 1952254, 6493036, 17917712, 45541888, 102869198, 219106196, 433633802, 820820502, 1471721904, 2552955354, 4256615846, 6910769098, 10880058248, 16766422418, 25217401274, 37267800170, 53987521754 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A248461

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A032510 A211691 A027850 * A281565 A281883 A282333

Adjacent sequences:  A248464 A248465 A248466 * A248468 A248469 A248470

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 06 2014

STATUS

approved

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Last modified May 27 15:36 EDT 2022. Contains 354105 sequences. (Running on oeis4.)