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 1-6 of 6 results.

A186550 1/8192 the number of (n+2)X6 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.

Original entry on oeis.org

168200, 88662978, 31976088817, 13544245035035, 5541254050323697, 2292090739550640497, 945658119457845662613, 390484318597052432729179, 161199926899075628268006706, 66551276226155618695804703318
Offset: 1

Views

Author

R. H. Hardin Feb 23 2011

Keywords

Comments

Column 4 of A186553

Examples

			Some solutions for 4X6
..0..0..1..0..0..2....0..0..0..2..0..1....0..2..2..0..0..1....0..2..2..0..0..2
..0..0..0..2..0..1....0..0..0..0..0..3....0..0..0..0..1..3....0..0..0..2..0..3
..0..0..0..0..0..3....0..0..0..2..2..1....0..0..0..0..0..1....0..0..0..2..0..3
..0..0..0..0..3..1....0..0..0..0..0..1....0..0..0..0..0..2....0..0..0..0..1..1

Links

A186547 1/8192 the number of (n+2)X3 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.

Original entry on oeis.org

0, 290, 2972, 168200, 3090668, 111188198, 2585394080, 78931270418, 2022581728964, 57893438838608, 1543873188898724, 43063896490838390, 1167248594013245504, 32220586362367051898, 879136485710121947756
Offset: 1

Views

Author

R. H. Hardin Feb 23 2011

Keywords

Comments

Column 1 of A186553

Examples

			Some solutions for 4X3
..2..0..2....0..0..0....0..0..2....2..0..0....2..0..2....0..0..0....0..0..0
..2..0..3....2..1..3....2..2..2....3..0..3....0..0..3....1..2..2....0..2..1
..1..1..1....2..0..3....0..0..3....2..0..3....2..1..2....3..1..2....1..2..3
..1..0..0....3..2..2....3..0..3....2..3..2....1..3..3....1..2..2....1..3..3

Links

Formula

Empirical: a(n)=32*a(n-1)-77*a(n-2)-4496*a(n-3)+117783*a(n-4)-1083636*a(n-5)+7006716*a(n-6)-23429520*a(n-7)+57318192*a(n-8)-54976320*a(n-9)+41990400*a(n-10)

A186548 1/8192 the number of (n+2)X4 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.

Original entry on oeis.org

290, 19016, 1279862, 88662978, 6215002266, 435599518160, 30577245619492, 2145961447892386, 150629240515340670, 10572567332219259666, 742094548656309697042, 52087780768510204956480, 3656060603655477820657112
Offset: 1

Views

Author

R. H. Hardin Feb 23 2011

Keywords

Comments

Column 2 of A186553

Examples

			Some solutions for 6X4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..2..0..0..0....0..0..0..0....0..0..0..0....3..0..0..0....2..0..0..0
..3..0..0..0....3..0..0..0....3..0..0..0....2..0..0..0....0..0..0..0
..0..1..2..0....1..1..0..0....2..1..0..0....2..0..0..0....0..2..0..0
..0..0..0..2....0..3..1..2....0..0..0..2....0..0..1..0....0..0..0..0
..2..2..2..1....1..1..1..0....3..1..2..1....1..3..0..1....3..1..2..0

Links

A186549 1/8192 the number of (n+2)X5 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.

Original entry on oeis.org

2972, 1279862, 177942264, 31976088817, 5253540132125, 891778365437358, 149628929202973235, 25212444270769802733, 4241667400028024496621, 714009811534975107167492, 120166248667449739439413727
Offset: 1

Views

Author

R. H. Hardin Feb 23 2011

Keywords

Comments

Column 3 of A186553

Examples

			Some solutions for 4X5
..0..2..0..0..0....0..1..3..0..2....1..1..0..0..2....1..2..2..0..0
..2..0..1..3..3....0..0..0..0..3....0..0..0..2..2....2..0..0..1..3
..0..0..2..2..2....0..0..0..2..0....0..0..0..0..1....0..0..2..1..0
..0..0..0..3..2....0..0..0..2..0....0..0..0..0..3....0..0..0..0..2

Links

A186551 1/8192 the number of (n+2) X 7 0..3 arrays with each 3 X 3 subblock trace equal to some horizontal or vertical neighbor 3 X 3 subblock trace.

Original entry on oeis.org

3090668, 6215002266, 5253540132125, 5541254050323697, 5484853650034152292, 5583822993675095945553
Offset: 1

Views

Author

R. H. Hardin Feb 23 2011

Keywords

Comments

Column 5 of A186553.

Examples

			Some solutions for 4 X 7
..0..0..0..1..0..2..2....0..0..0..3..3..1..2....0..0..0..2..1..3..1
..0..0..0..0..1..2..1....0..0..0..0..0..1..1....0..0..0..0..3..3..3
..0..0..0..0..0..1..1....0..0..0..0..0..2..1....0..0..0..0..0..0..1
..0..0..0..0..0..3..1....0..0..0..0..0..3..1....0..0..0..0..0..0..2

Crossrefs

Cf. A186553.

A186552 1/8192 the number of (n+2)X8 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.

Original entry on oeis.org

111188198, 435599518160, 891778365437358, 2292090739550640497, 5583822993675095945553
Offset: 1

Views

Author

R. H. Hardin Feb 23 2011

Keywords

Comments

Column 6 of A186553

Examples

			Some solutions for 4X8
..0..0..0..2..1..3..0..2....0..0..0..2..2..3..0..2....0..0..0..2..2..1..0..2
..0..0..0..0..2..2..2..1....0..0..0..0..0..2..0..2....0..0..0..0..0..0..2..1
..0..0..0..0..0..0..1..0....0..0..0..0..0..2..0..0....0..0..0..0..0..2..2..1
..0..0..0..0..0..0..3..2....0..0..0..0..0..0..1..1....0..0..0..0..0..0..3..3
Showing 1-6 of 6 results.

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