A248433 -id:A248433 - cp's OEIS frontend

A248439 Number of length 6+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third.

2, 9, 44, 261, 590, 1105, 1684, 2775, 3978, 5365, 6776, 8639, 10512, 12467, 14562, 17349, 20144, 23213, 26282, 29727, 33264, 36831, 40398, 44775, 49264, 53769, 58386, 63261, 68136, 73375, 78614, 84601, 90640, 96693, 102922, 109691, 116460, 123235

Offset: 1

R. H. Hardin, Oct 06 2014

nonn

Row 6 of A248433

			Some solutions for n=6
..4....4....5....5....2....3....4....5....5....3....2....0....1....6....2....1
..6....0....3....3....0....1....2....3....4....4....0....1....3....2....1....3
..2....2....1....1....1....2....6....4....3....2....4....2....5....4....3....2
..4....4....2....5....2....3....4....2....2....3....2....3....1....0....2....1
..6....0....0....3....3....4....2....3....4....4....6....4....3....2....4....3
..5....2....1....1....4....5....6....1....3....2....4....5....5....4....0....5
..4....4....2....5....5....3....4....5....2....3....5....3....4....0....2....4
..6....3....3....3....3....1....5....3....4....4....3....4....3....2....1....3

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

A248440 Number of length 7+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third.

Original entry on oeis.org

2, 9, 52, 389, 1014, 2021, 3200, 5589, 8218, 11401, 14696, 18947, 23274, 27861, 32772, 39481, 46246, 53633, 61036, 69369, 77910, 86569, 95228, 105879, 116826, 127859, 139132, 150965, 162798, 175561, 188324, 203137, 218098, 233121, 248604, 265287

Offset: 1

R. H. Hardin, Oct 06 2014

nonn

Row 7 of A248433

			Some solutions for n=6
..4....2....1....3....3....6....5....1....4....5....1....6....3....2....4....2
..0....0....0....2....4....4....3....2....2....1....0....5....4....3....2....6
..2....4....2....4....5....5....1....3....0....3....2....4....5....4....6....4
..4....2....1....3....3....3....5....1....4....2....1....3....3....2....4....5
..0....3....0....2....4....1....3....2....2....4....0....5....4....0....5....3
..2....4....2....1....5....2....4....0....6....3....2....1....2....1....6....4
..1....2....4....3....3....3....5....4....4....2....4....3....3....2....4....2
..3....3....6....5....4....4....3....2....2....1....6....5....4....0....2....0
..5....4....2....4....5....5....4....0....3....3....5....4....5....4....6....1

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

cp's OEIS Frontend

A248439 Number of length 6+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third.

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