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.

A194499 Number of lower triangles of an n X n 0..2 array with each element unequal to the sum mod 3 of its horizontal and vertical neighbors.

Original entry on oeis.org

2, 8, 72, 1020, 32768, 2097152, 268460064, 68721573888, 35184372088832, 36028797020012544
Offset: 1

Views

Author

R. H. Hardin Aug 27 2011

Keywords

Comments

Column 2 of A194505

Examples

			Some solutions for 3X3
..1......1......2......0......0......0......0......2......0......1......1
..0.0....2.0....0.0....2.0....2.1....2.2....2.2....1.2....2.0....0.2....2.1
..1.2.0..2.2.1..0.1.2..0.2.0..2.1.0..1.1.0..1.1.2..1.2.0..0.2.1..2.1.2..1.1.0
		

A194500 Number of lower triangles of an n X n 0..3 array with each element unequal to the sum mod 4 of its horizontal and vertical neighbors.

Original entry on oeis.org

3, 27, 776, 59052, 14348907, 10460353203, 22876792454961, 150094717239776832
Offset: 1

Views

Author

R. H. Hardin Aug 27 2011

Keywords

Comments

Column 3 of A194505

Examples

			Some solutions for 3X3
..0......1......1......1......2......1......3......2......2......1......1
..1.3....3.1....0.3....2.0....3.2....0.0....1.3....1.3....0.2....0.3....3.3
..1.1.3..2.0.2..1.2.3..3.0.2..1.1.3..2.3.0..1.1.2..2.0.1..2.3.1..3.2.3..0.3.1
		

A194501 Number of lower triangles of an n X n 0..4 array with each element unequal to the sum mod 5 of its horizontal and vertical neighbors.

Original entry on oeis.org

4, 64, 4160, 1048560, 1073741824, 4398046511104, 72057594037927936
Offset: 1

Views

Author

R. H. Hardin Aug 27 2011

Keywords

Comments

Column 4 of A194505

Examples

			Some solutions for 3X3
..0......1......3......1......0......1......2......2......4......1......0
..2.0....0.3....2.4....0.2....1.0....4.0....4.2....0.4....2.3....2.2....3.4
..4.1.4..2.4.0..1.1.4..1.4.2..0.3.1..0.0.2..3.1.2..2.0.1..3.4.0..3.3.4..3.2.4
		

A194502 Number of lower triangles of an n X n 0..5 array with each element unequal to the sum mod 6 of its horizontal and vertical neighbors.

Original entry on oeis.org

5, 125, 15804, 9765630, 30517578125, 476837158203125, 37252902986083985625
Offset: 1

Views

Author

R. H. Hardin Aug 27 2011

Keywords

Comments

Column 5 of A194505

Examples

			Some solutions for 3X3
..2......2......5......4......1......4......0......1......1......1......5
..3.2....1.0....0.1....3.3....0.0....2.1....3.1....2.5....3.4....3.1....3.5
..3.2.1..2.3.0..1.4.3..1.1.5..0.5.3..2.3.2..1.5.1..4.5.4..1.3.1..3.1.0..1.1.4
		

A194503 Number of lower triangles of an n X n 0..6 array with each element unequal to the sum mod 7 of its horizontal and vertical neighbors.

Original entry on oeis.org

6, 216, 46872, 60466140, 470184984576, 21936950640377856
Offset: 1

Views

Author

R. H. Hardin Aug 27 2011

Keywords

Comments

Column 6 of A194505

Examples

			Some solutions for 3X3
..1......3......6......0......1......2......5......0......4......2......4
..2.2....4.6....3.2....5.6....0.3....5.2....4.1....6.2....5.5....0.1....1.3
..5.2.3..6.0.5..4.0.6..3.3.6..0.5.3..3.2.1..0.2.6..1.6.5..6.6.1..5.2.0..4.1.6
		

A194504 Number of lower triangles of an n X n 0..7 array with each element unequal to the sum mod 8 of its horizontal and vertical neighbors.

Original entry on oeis.org

7, 343, 118096, 282475256, 4747561509943, 558545864083284007
Offset: 1

Views

Author

R. H. Hardin Aug 27 2011

Keywords

Comments

Column 7 of A194505

Examples

			Some solutions for 3X3
..2......3......7......0......6......0......3......6......5......4......7
..7.1....4.2....4.2....6.4....4.4....2.4....5.2....4.4....1.0....2.3....4.4
..6.4.1..4.3.1..2.3.6..1.7.4..5.2.5..4.3.0..6.3.7..0.7.4..0.2.1..7.6.0..0.6.0
		
Showing 1-6 of 6 results.