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 1-4 of 4 results.

A253160 Number of (n+1) X (2+1) 0..2 arrays with every 2 X 2 subblock sum differing from its neighbors horizontally, vertically and nw-se diagonally.

Original entry on oeis.org

558, 5136, 46752, 443362, 4189216, 39478862, 371551030, 3500351616, 32968666098, 310607972526, 2925948121986, 27562007609152, 259623715582126, 2445694348190100, 23038546105524370, 217021887885861286
Offset: 1

Views

Author

R. H. Hardin, Dec 28 2014

Keywords

Comments

Column 2 of A253164.

Examples

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

Crossrefs

Cf. A253164.

A253161 Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically and nw-se diagonally.

Original entry on oeis.org

3844, 46752, 555842, 7252320, 92998506, 1190692584, 15179218714, 194198939906, 2482220834294, 31740256495626, 405683545431502, 5186473593590730, 66301707444606534, 847604837440730462, 10835407210226372002
Offset: 1

Views

Author

R. H. Hardin, Dec 28 2014

Keywords

Comments

Column 3 of A253164

Examples

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

A253162 Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically and nw-se diagonally.

Original entry on oeis.org

26784, 443362, 7252320, 135741428, 2461955138, 44789509812, 808045500430, 14674315377606, 265844130932752, 4822273171428216, 87389675007459160, 1584487801002237370, 28722425603939593796, 520728445103764345118
Offset: 1

Views

Author

R. H. Hardin, Dec 28 2014

Keywords

Comments

Column 4 of A253164

Examples

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

A253163 Number of (n+1)X(5+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically and nw-se diagonally.

Original entry on oeis.org

186624, 4189216, 92998506, 2461955138, 62954425188, 1612778665632, 40892835737758, 1045243631714532, 26655995880836874, 680590803725411114, 17356137926136738110, 442903594404834251862, 11300064205772118129666
Offset: 1

Views

Author

R. H. Hardin, Dec 28 2014

Keywords

Comments

Column 5 of A253164

Examples

			Some solutions for n=1
..0..1..1..0..0..0....1..0..1..2..2..0....1..1..2..0..2..1....0..0..1..0..2..0
..0..0..2..0..2..2....1..1..2..2..0..1....2..0..0..0..1..0....2..2..2..0..0..2
		
Showing 1-4 of 4 results.