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A245135 Number of length 5 0..n arrays least squares fitting to a zero slope straight line, with a single point taken as having zero slope 1
8, 39, 112, 275, 552, 1029, 1728, 2781, 4200, 6171, 8688, 11999, 16072, 21225, 27392, 34969, 43848, 54511, 66800, 81291, 97768, 116909, 138432, 163125, 190632, 221859, 256368, 295191, 337800, 385361, 437248, 494769, 557192, 625975, 700272, 781699 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A245134

LINKS

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

FORMULA

Empirical: a(n) = 2*a(n-1) +2*a(n-2) -6*a(n-3) +6*a(n-5) -2*a(n-6) -2*a(n-7) +a(n-8).

Empirical: G.f.: -x*(8+23*x+18*x^2+21*x^3+12*x^4-x^5-2*x^6+x^7) / ( (1+x)^3*(x-1)^5 ). - R. J. Mathar, Jul 12 2014

EXAMPLE

Some solutions for n=10

..8....8....5....6....6....7....5....1....9....5....7....4....4....0....7....4

..0....0....6....3....5....6....6....6....0....2....1....7...10....6....1....8

..3....6....2....7....3....4....6....6...10....2....7....9....0....0....4....0

..6....0...10....1....9....6....4....8....0...10....3....7....2....0....3....0

..5....8....3....7....4....7....6....0....9....1....6....4....8....3....6....8

CROSSREFS

Sequence in context: A003353 A209368 A190097 * A200157 A101374 A163687

Adjacent sequences:  A245132 A245133 A245134 * A245136 A245137 A245138

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 12 2014

STATUS

approved

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Last modified September 20 13:19 EDT 2020. Contains 337264 sequences. (Running on oeis4.)