A248461 -id:A248461 - cp's OEIS frontend

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.

68, 576, 14040, 96736, 520788, 1952254, 6493036, 17917712, 45541888, 102869198, 219106196, 433633802, 820820502, 1471721904, 2552955354, 4256615846, 6910769098, 10880058248, 16766422418, 25217401274, 37267800170, 53987521754

Offset: 1

R. H. Hardin, Oct 06 2014

nonn

Row 6 of A248461

			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

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

A248468 Number of length 7+2 0..n arrays with no three consecutive terms having the sum of any two elements equal to twice the third.

Original entry on oeis.org

110, 1152, 43940, 387488, 2582406, 11447368, 44452660, 139623544, 400150926, 1002628764, 2352502608, 5078891508, 10430306882, 20141675148, 37480145240, 66683720948, 115148012058, 192026426768, 312626222120, 495163608752

Offset: 1

R. H. Hardin, Oct 06 2014

nonn

Row 7 of A248461

			Some solutions for n=3
..0....2....2....1....3....1....0....0....2....1....0....3....2....1....1....3
..0....2....3....3....1....0....0....3....3....3....3....1....2....3....0....1
..1....3....3....3....0....3....3....3....0....3....1....1....0....0....1....0
..1....0....0....0....0....2....1....1....2....2....3....3....2....3....1....3
..3....2....0....1....3....0....0....3....3....2....3....1....0....3....3....2
..0....3....3....1....2....2....0....1....0....1....2....3....3....0....0....3
..1....3....0....0....0....0....2....0....0....2....2....1....3....1....3....0
..0....2....1....3....3....2....0....0....2....1....0....3....2....1....0....1
..0....3....1....3....0....0....3....3....0....2....3....3....2....3....0....1

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

cp's OEIS Frontend

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.

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