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A248543 Number of length 6+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth 1
2, 15, 52, 173, 594, 1219, 2960, 6069, 10858, 16099, 23300, 33707, 47400, 63085, 82288, 106583, 135878, 168791, 206738, 250813, 302416, 358755, 422014, 498189, 580572, 669539, 768718, 878929, 998028, 1123317, 1258070, 1407363, 1570088 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A248537

LINKS

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

EXAMPLE

Some solutions for n=6

..5....2....0....4....2....4....0....3....4....5....3....5....5....4....0....3

..5....0....1....5....1....0....4....1....5....2....4....1....2....1....2....1

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

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

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

..5....4....1....5....1....4....0....1....5....2....0....1....2....1....2....1

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

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

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

CROSSREFS

Sequence in context: A007972 A248541 A248542 * A248544 A015520 A098520

Adjacent sequences:  A248540 A248541 A248542 * A248544 A248545 A248546

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 08 2014

STATUS

approved

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Last modified January 22 22:16 EST 2020. Contains 331166 sequences. (Running on oeis4.)