

A248544


Number of length 7+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, 197, 762, 1635, 4424, 9681, 18006, 27031, 39712, 58889, 84802, 114305, 150856, 198147, 256038, 321105, 396728, 485607, 591270, 706739, 836684, 996031, 1169410, 1356535, 1566720, 1801223, 2055290, 2322411, 2610784, 2932121, 3284562
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OFFSET

1,1


COMMENTS

Row 7 of A248537


LINKS

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


EXAMPLE

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


CROSSREFS

Sequence in context: A248541 A248542 A248543 * A015520 A098520 A216333
Adjacent sequences: A248541 A248542 A248543 * A248545 A248546 A248547


KEYWORD

nonn


AUTHOR

R. H. Hardin, Oct 08 2014


STATUS

approved



