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A246889 Number of length n+4 0..5 arrays with some pair in every consecutive five terms totalling exactly 5 1
6210, 33294, 177648, 942216, 4971120, 26346486, 139555230, 738947844, 3912529200, 20719113168, 109715387730, 580975750422, 3076449953280, 16290853187184, 86265445976256, 456803864051526, 2418927144356598 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A246892

LINKS

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

FORMULA

Empirical: a(n) = 3*a(n-1) +7*a(n-2) +19*a(n-3) +53*a(n-4) -40*a(n-5) -36*a(n-6) -24*a(n-7) -64*a(n-8) +16*a(n-9) +29*a(n-10) -3*a(n-11) +5*a(n-12) +a(n-13) -a(n-14)

EXAMPLE

Some solutions for n=3

..4....1....4....4....1....3....4....0....4....3....1....3....3....0....1....1

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

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

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

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

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

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

CROSSREFS

Sequence in context: A031836 A094494 A235277 * A172629 A172697 A172731

Adjacent sequences:  A246886 A246887 A246888 * A246890 A246891 A246892

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 06 2014

STATUS

approved

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Last modified June 23 07:38 EDT 2021. Contains 345395 sequences. (Running on oeis4.)