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A247403 Number of length n+4 0..7 arrays with no disjoint pairs in any consecutive five terms having the same sum 1
12120, 49032, 201172, 826488, 3385192, 13824356, 56865236, 234794368, 969917240, 4001182804, 16485572528, 67985714396, 280631148932, 1158709193724, 4782845970920, 19735114869944, 81437829945420, 336129412428444 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A247404

LINKS

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

EXAMPLE

Some solutions for n=2

..2....4....5....1....7....1....1....5....7....6....1....0....2....0....2....6

..6....2....5....4....7....5....0....1....6....7....1....5....5....5....0....6

..4....2....3....3....5....7....2....1....4....3....1....7....6....1....7....3

..7....6....0....4....0....4....4....6....2....7....0....0....2....3....2....0

..7....5....6....4....6....1....7....7....2....7....3....6....7....1....6....6

..7....7....6....7....5....1....4....5....3....5....6....5....5....6....0....6

CROSSREFS

Sequence in context: A257357 A070187 A031661 * A262635 A186564 A247690

Adjacent sequences:  A247400 A247401 A247402 * A247404 A247405 A247406

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 16 2014

STATUS

approved

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Last modified September 23 12:43 EDT 2021. Contains 347617 sequences. (Running on oeis4.)