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A200274 Number of 0..n arrays x(0..6) of 7 elements with zero 4th differences 1
2, 5, 8, 13, 18, 37, 64, 97, 140, 207, 286, 399, 528, 687, 878, 1127, 1408, 1749, 2130, 2607, 3128, 3743, 4414, 5191, 6056, 7067, 8156, 9387, 10706, 12241, 13876, 15717, 17670, 19829, 22172, 24787, 27542, 30571, 33752, 37317, 41058, 45153, 49440, 54073 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A200272

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

FORMULA

Empirical: a(n) = a(n-5) +a(n-9) +a(n-10) -a(n-14) -a(n-15) -a(n-19) +a(n-20) +a(n-24) -a(n-25) -a(n-29) -a(n-30) +a(n-34) +a(n-35) +a(n-36) +a(n-39) -a(n-41) -a(n-44) -a(n-45) -a(n-46) +a(n-50) +a(n-51) +a(n-55) -a(n-56) -a(n-60) +a(n-61) +a(n-65) +a(n-66) -a(n-70) -a(n-71) -a(n-75) +a(n-80)

EXAMPLE

Some solutions for n=6

..4....6....0....5....5....2....1....3....4....1....3....0....5....3....6....2

..2....3....4....6....1....2....0....5....6....1....1....6....5....1....4....0

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

..3....0....2....3....1....2....3....6....5....1....2....3....5....0....5....1

..4....0....0....1....3....2....5....5....4....1....3....0....5....1....6....2

..4....1....0....0....5....2....6....3....4....1....3....0....5....3....6....2

..2....3....4....1....6....2....5....0....6....1....1....6....5....6....4....0

CROSSREFS

Sequence in context: A290268 A000982 A289751 * A122221 A083704 A111097

Adjacent sequences:  A200271 A200272 A200273 * A200275 A200276 A200277

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 15 2011

STATUS

approved

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Last modified December 9 09:18 EST 2019. Contains 329877 sequences. (Running on oeis4.)