A246892 -id:A246892 - cp's OEIS frontend

A246897 Number of length 5+4 0..n arrays with some pair in every consecutive five terms totalling exactly n.

416, 16621, 173056, 1216081, 4971120, 17677453, 47799488, 120392449, 259777600, 536775181, 1005318336, 1828277521, 3107102096, 5168689261, 8183025280, 12745702273, 19117702368, 28308317869, 40691100800, 57882676561, 80386887856

Offset: 1

R. H. Hardin, Sep 06 2014

nonn

Row 5 of A246892

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

R. H. Hardin, Table of n, a(n) for n = 1..65

Empirical: a(n) = 2*a(n-1) +5*a(n-2) -12*a(n-3) -9*a(n-4) +30*a(n-5) +5*a(n-6) -40*a(n-7) +5*a(n-8) +30*a(n-9) -9*a(n-10) -12*a(n-11) +5*a(n-12) +2*a(n-13) -a(n-14)

A246898 Number of length 6+4 0..n arrays with some pair in every consecutive five terms totalling exactly n.

Original entry on oeis.org

802, 48393, 643204, 5592169, 26346486, 107053441, 319477960, 884303793, 2058978250, 4577948761, 9125970252, 17627483353, 31593727774, 55331109009, 91774208656, 149536831201, 233808185970, 360429285673, 537940839700

Offset: 1

R. H. Hardin, Sep 06 2014

nonn

Row 6 of A246892

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

R. H. Hardin, Table of n, a(n) for n = 1..63

Empirical: a(n) = 2*a(n-1) +6*a(n-2) -14*a(n-3) -14*a(n-4) +42*a(n-5) +14*a(n-6) -70*a(n-7) +70*a(n-9) -14*a(n-10) -42*a(n-11) +14*a(n-12) +14*a(n-13) -6*a(n-14) -2*a(n-15) +a(n-16)

A246899 Number of length 7+4 0..n arrays with some pair in every consecutive five terms totalling exactly n.

Original entry on oeis.org

1546, 140893, 2390116, 25710385, 139555230, 647845357, 2132283592, 6483573889, 16272395890, 38904095581, 82432596396, 168949326193, 318823302406, 587124413485, 1018357762960, 1733359959937, 2819557291482, 4517952689629

Offset: 1

R. H. Hardin, Sep 06 2014

nonn

Row 7 of A246892

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

R. H. Hardin, Table of n, a(n) for n = 1..59

Empirical: a(n) = 2*a(n-1) +7*a(n-2) -16*a(n-3) -20*a(n-4) +56*a(n-5) +28*a(n-6) -112*a(n-7) -14*a(n-8) +140*a(n-9) -14*a(n-10) -112*a(n-11) +28*a(n-12) +56*a(n-13) -20*a(n-14) -16*a(n-15) +7*a(n-16) +2*a(n-17) -a(n-18)

cp's OEIS Frontend

A246897 Number of length 5+4 0..n arrays with some pair in every consecutive five terms totalling exactly n.

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A246898 Number of length 6+4 0..n arrays with some pair in every consecutive five terms totalling exactly n.

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A246899 Number of length 7+4 0..n arrays with some pair in every consecutive five terms totalling exactly n.

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