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 1-3 of 3 results.

A268047 Number of nX3 0..3 arrays with every repeated value in every row unequal to, and in every column equal to, the previous repeated value, and new values introduced in row-major sequential order.

Original entry on oeis.org

4, 159, 9054, 467899, 22309009, 999810316, 42764566838, 1764109373799, 70707661248442, 2768685594929370, 106349114580207849, 4020025709583200998, 149916029504065737481, 5526692782368686983855, 201739654709622213459404
Offset: 1

Views

Author

R. H. Hardin, Jan 25 2016

Keywords

Comments

Column 3 of A268049.

Examples

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

Crossrefs

Cf. A268049.

Formula

Empirical recurrence of order 78 (see link above)

A268048 Number of nX4 0..4 arrays with every repeated value in every row unequal to, and in every column equal to, the previous repeated value, and new values introduced in row-major sequential order.

Original entry on oeis.org

12, 3183, 1650058, 829256141, 386602239495, 168939588471080, 70137880138850634, 27947317545815128289, 10768364145370007188272, 4034957610865168347501829, 1476750375062134346976725823
Offset: 1

Views

Author

R. H. Hardin, Jan 25 2016

Keywords

Comments

Column 4 of A268049.

Examples

			Some solutions for n=5
..0..0..1..0....0..0..1..0....0..0..1..0....0..0..1..0....0..0..1..0
..0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0
..2..0..0..3....2..0..0..2....1..0..0..2....2..0..0..3....2..0..0..2
..4..3..0..0....3..1..0..1....3..0..0..1....4..2..0..2....3..4..0..3
..2..3..0..4....1..0..4..0....4..2..2..4....3..3..0..3....4..2..0..4
		

Crossrefs

Cf. A268049.

A268050 Number of 3Xn 0..n arrays with every repeated value in every row unequal to, and in every column equal to, the previous repeated value, and new values introduced in row-major sequential order.

Original entry on oeis.org

4, 122, 9054, 1650058, 525124941, 262999737747, 190270786192101, 188077605422375047, 243772201296637313108, 401542086990450371906244
Offset: 1

Views

Author

R. H. Hardin, Jan 25 2016

Keywords

Comments

Row 3 of A268049.

Examples

			Some solutions for n=5
..0..0..1..2..1....0..0..1..2..2....0..0..1..1..0....0..0..1..2..2
..0..0..1..0..3....0..0..1..0..3....0..0..2..0..2....0..0..1..0..1
..3..4..1..2..4....1..1..0..3..0....1..2..2..3..4....3..4..1..5..3
		

Crossrefs

Cf. A268049.
Showing 1-3 of 3 results.