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 1-7 of 7 results.

A201210 Number of nX2 0..3 arrays with every row and column running average nondecreasing rightwards and downwards.

Original entry on oeis.org

10, 50, 216, 867, 3318, 12314, 44858, 161257, 574237, 2029778, 7132780, 24943546, 86875164, 301535122, 1043529630, 3602228998, 12407419230, 42653320657, 146380696477, 501599529832, 1716499421419, 5866845453921, 20030578702565
Offset: 1

Views

Author

R. H. Hardin Nov 28 2011

Keywords

Comments

Column 2 of A201216

Examples

			Some solutions for n=7
..0..0....0..3....0..1....0..0....0..1....0..0....0..0....0..0....0..0....0..1
..0..1....0..3....0..1....1..2....0..1....1..2....0..2....0..2....0..0....0..1
..2..2....1..3....0..1....1..1....0..1....1..2....1..1....0..1....0..2....1..1
..2..2....3..3....0..1....1..3....0..2....1..3....1..2....2..2....3..3....2..3
..2..3....3..3....3..3....2..3....1..3....1..3....1..2....3..3....2..3....3..3
..2..3....2..3....2..2....1..3....2..2....1..3....1..2....2..2....1..3....3..3
..2..3....2..3....2..2....1..3....1..3....1..3....2..3....2..3....2..3....3..3
		

A201211 Number of n X 3 0..3 arrays with every row and column running average nondecreasing rightwards and downwards.

Original entry on oeis.org

23, 216, 1684, 11932, 79739, 512681, 3216277, 19817136, 120478844, 724707450, 4322688971, 25608764387, 150879112600, 884928308606, 5170909446013, 30121160018287, 174998088275471, 1014425257507861, 5869059549460367
Offset: 1

Views

Author

R. H. Hardin, Nov 28 2011

Keywords

Comments

Column 3 of A201216.

Examples

			Some solutions for n=5
..0..0..0....0..0..1....0..0..0....0..1..1....0..0..0....0..0..0....0..0..1
..0..0..0....0..2..2....1..2..2....0..3..2....0..2..3....0..0..1....1..1..3
..0..1..1....0..3..2....1..1..1....1..3..3....1..1..2....0..0..2....2..2..2
..0..2..3....2..3..3....1..3..3....2..3..3....1..1..3....1..2..2....2..3..3
..0..2..2....1..2..3....1..2..2....1..3..3....1..2..2....1..3..2....3..3..3
		

Crossrefs

Cf. A201216.

A201212 Number of nX4 0..3 arrays with every row and column running average nondecreasing rightwards and downwards.

Original entry on oeis.org

51, 867, 11932, 146946, 1692945, 18624423, 198262359, 2055746385, 20869314255, 208139081237, 2045065967111, 19837690800848, 190312987378848, 1808321481842796, 17039496826295448, 159395007901738133
Offset: 1

Views

Author

R. H. Hardin Nov 28 2011

Keywords

Comments

Column 4 of A201216

Examples

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

A201213 Number of nX5 0..3 arrays with every row and column running average nondecreasing rightwards and downwards.

Original entry on oeis.org

110, 3318, 79739, 1692945, 33635880, 638359663, 11689716107, 207621805136, 3594844603992, 60914727372933, 1013396766898715, 16591453817563704, 267827348618612139, 4269426979477614558, 67301147695731132425
Offset: 1

Views

Author

R. H. Hardin Nov 28 2011

Keywords

Comments

Column 5 of A201216

Examples

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

A201209 Number of n X n 0..3 arrays with every row and column running average nondecreasing rightwards and downwards.

Original entry on oeis.org

4, 50, 1684, 146946, 33635880, 21062625664, 37432954261477
Offset: 1

Views

Author

R. H. Hardin Nov 28 2011

Keywords

Comments

Diagonal of A201216

Examples

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

A201214 Number of nX6 0..3 arrays with every row and column running average nondecreasing rightwards and downwards.

Original entry on oeis.org

233, 12314, 512681, 18624423, 638359663, 21062625664, 671706552402, 20756983300265, 624562355419649, 18382517638082006, 531236200468061769, 15113072656159194185, 424027010031462876498
Offset: 1

Views

Author

R. H. Hardin Nov 28 2011

Keywords

Comments

Column 6 of A201216

Examples

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

A201215 Number of nX7 0..3 arrays with every row and column running average nondecreasing rightwards and downwards.

Original entry on oeis.org

488, 44858, 3216277, 198262359, 11689716107, 671706552402, 37432954261477, 2020620825251740
Offset: 1

Views

Author

R. H. Hardin Nov 28 2011

Keywords

Comments

Column 7 of A201216

Examples

			Some solutions for n=2
..0..2..1..2..3..3..3....0..0..0..0..0..0..1....0..0..0..2..2..2..1
..2..2..2..3..3..3..3....0..1..3..3..3..2..3....1..1..1..2..3..2..3
		
Showing 1-7 of 7 results.