cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-5 of 5 results.

A218819 Unmatched value maps: number of nX4 binary arrays indicating the locations of corresponding elements not equal to any king-move neighbor in a random 0..2 nX4 array.

Original entry on oeis.org

7, 108, 1028, 8961, 80692, 720305, 6449353, 57696032, 516297052, 4619740712, 41337798409, 369890905178, 3309794955133, 29616122507437, 265005821287188, 2371278692119396, 21218261329031222, 189861534294482599
Offset: 1

Views

Author

R. H. Hardin Nov 06 2012

Keywords

Comments

Column 4 of A218823

Examples

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

Links

Formula

Empirical: a(n) = 13*a(n-1) -30*a(n-2) -97*a(n-3) +386*a(n-4) -89*a(n-5) -794*a(n-6) +557*a(n-7) +352*a(n-8) -279*a(n-9) -56*a(n-10) +40*a(n-11) +7*a(n-12) -3*a(n-13) for n>14

A218818 Unmatched value maps: number of n X n binary arrays indicating the locations of corresponding elements not equal to any king-move neighbor in a random 0..2 n X n array.

Original entry on oeis.org

1, 11, 195, 8961, 1229783, 468783431
Offset: 1

Views

Author

R. H. Hardin, Nov 06 2012

Keywords

Examples

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

Crossrefs

Diagonal of A218823.

A218820 Unmatched value maps: number of nX5 binary arrays indicating the locations of corresponding elements not equal to any king-move neighbor in a random 0..2 nX5 array.

Original entry on oeis.org

12, 337, 5529, 80692, 1229783, 18519049, 280040904, 4229571209, 63907047147, 965490629060, 14586966316231, 220382236868025
Offset: 1

Views

Author

R. H. Hardin Nov 06 2012

Keywords

Comments

Column 5 of A218823

Examples

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

A218821 Unmatched value maps: number of nX6 binary arrays indicating the locations of corresponding elements not equal to any king-move neighbor in a random 0..2 nX6 array.

Original entry on oeis.org

21, 1049, 29593, 720305, 18519049, 468783431, 11931365309, 303182474797
Offset: 1

Views

Author

R. H. Hardin Nov 06 2012

Keywords

Comments

Column 6 of A218823

Examples

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

A218822 Unmatched value maps: number of nX7 binary arrays indicating the locations of corresponding elements not equal to any king-move neighbor in a random 0..2 nX7 array.

Original entry on oeis.org

37, 3268, 158648, 6449353, 280040904, 11931365309
Offset: 1

Views

Author

R. H. Hardin Nov 06 2012

Keywords

Comments

Column 7 of A218823

Examples

			Some solutions for n=3
..1..0..1..0..0..0..0....0..0..1..0..1..0..1....0..1..0..1..1..0..1
..0..0..0..0..1..0..1....0..1..0..0..0..1..0....0..0..0..0..0..1..0
..0..1..0..1..0..0..0....1..0..0..1..1..0..1....0..1..0..0..0..0..0
Showing 1-5 of 5 results.

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