A248063 Number of length n+5 0..3 arrays with some disjoint triples in each consecutive six terms having the same sum.

1804, 3364, 6364, 12124, 23164, 44284, 84604, 161824, 309724, 592924, 1135114, 2173054, 4159984, 7963744, 15245944, 29187364, 55877344, 106973434, 204793204, 392062324, 750576604, 1436928334, 2750902624, 5266417594, 10082200714

Offset

1,1

Comments

Column 3 of A248068.

Links

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

Formula

Empirical: a(n) = 2*a(n-1) -a(n-4) +a(n-5) +a(n-6) -2*a(n-7) -2*a(n-8) +2*a(n-10) -a(n-12) +a(n-13) +a(n-15) -a(n-16).

Example

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

Crossrefs

Cf. A248068.

Sequence in context: A180685 A222418 A252676 * A256027 A196788 A252029

Adjacent sequences: A248060 A248061 A248062 * A248064 A248065 A248066

Keyword

nonn

Author

R. H. Hardin, Sep 30 2014

Status

approved