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A248989 Number of length 2+4 0..n arrays with every five consecutive terms having two times the sum of some three elements equal to three times the sum of the remaining two 1
2, 53, 204, 585, 1654, 4137, 7964, 14661, 23778, 39441, 60264, 90193, 126626, 176141, 239692, 322385, 419046, 539841, 675924, 853485, 1053130, 1293121, 1559752, 1873217, 2232130, 2653637, 3111812, 3639577, 4210230, 4884793, 5609564, 6430901 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 2 of A248987

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..196

EXAMPLE

Some solutions for n=6

..6....5....0....6....0....5....1....2....0....0....1....0....3....3....3....2

..3....0....1....2....3....3....4....2....1....6....4....0....3....3....6....5

..5....2....3....4....1....6....5....4....0....2....5....3....6....1....2....6

..1....1....6....2....5....2....4....3....3....2....2....6....6....3....4....2

..5....2....5....1....6....4....6....4....1....0....3....1....2....0....5....0

..1....0....5....1....5....5....6....2....0....5....1....5....3....3....3....2

CROSSREFS

Sequence in context: A249663 A130698 A248988 * A248990 A248991 A248992

Adjacent sequences:  A248986 A248987 A248988 * A248990 A248991 A248992

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 18 2014

STATUS

approved

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Last modified September 22 07:34 EDT 2020. Contains 337289 sequences. (Running on oeis4.)