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.

A222643 Number of nX2 0..2 arrays with no more than floor(nX2/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order.

Original entry on oeis.org

1, 1, 3, 12, 38, 124, 430, 1530, 5378, 18938, 67042, 238446, 849586, 3033214, 10851386, 38895414, 139634834, 502003486, 1807104810, 6512929766, 23498319154, 84864219966, 306764487338, 1109807490550, 4018136484386, 14558333191406
Offset: 1

Views

Author

R. H. Hardin Feb 27 2013

Keywords

Comments

Column 2 of A222649

Examples

			All solutions for n=3
..0..0....0..0....0..1
..0..0....0..0....1..1
..0..1....0..0....1..1
		

A222644 Number of nX3 0..2 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order.

Original entry on oeis.org

1, 3, 5, 61, 157, 1972, 5625, 66494, 199913, 2287282, 7139249, 79717242, 256220797, 2809951302, 9231274681, 99944316278, 333695579117, 3580758403290, 12097457881457, 129044857946718, 439704005416389, 4672793859793730
Offset: 1

Views

Author

R. H. Hardin Feb 27 2013

Keywords

Comments

Column 3 of A222649

Examples

			All solutions for n=3
..0..0..0....0..1..1....0..0..0....0..0..0....0..0..1
..0..0..0....1..1..1....0..0..0....0..0..0....0..0..0
..0..0..0....1..1..1....1..0..0....0..0..1....0..0..0
		

A222645 Number of nX4 0..2 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order.

Original entry on oeis.org

4, 12, 61, 457, 3411, 31487, 317655, 3161392, 31436637, 315944445, 3182997999, 32059374557, 323386403994, 3267568146811, 33053624461081, 334704837151091, 3392894959638835, 34428005433287948, 349661755820884825
Offset: 1

Views

Author

R. H. Hardin Feb 27 2013

Keywords

Comments

Column 4 of A222649

Examples

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

A222646 Number of nX5 0..2 arrays with no more than floor(nX5/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order.

Original entry on oeis.org

5, 38, 157, 3411, 25724, 640355, 5969486, 171452513, 1679184332, 49651101137, 492598252164, 14686568899907, 146101017534391, 4371548520227608, 43539382164274640, 1306171266098680162, 13019733745716644843
Offset: 1

Views

Author

R. H. Hardin Feb 27 2013

Keywords

Comments

Column 5 of A222649

Examples

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

A222647 Number of nX6 0..2 arrays with no more than floor(nX6/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order.

Original entry on oeis.org

14, 124, 1972, 31487, 640355, 14332759, 368332772, 10043940772, 284244110551, 8226667384808, 241133356688912, 7114602923990714, 210559950416898737, 6242924249769223277, 185325019232915608483, 5505984077315049257202
Offset: 1

Views

Author

R. H. Hardin Feb 27 2013

Keywords

Comments

Column 6 of A222649

Examples

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

A222648 Number of nX7 0..2 arrays with no more than floor(nX7/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order.

Original entry on oeis.org

17, 430, 5625, 317655, 5969486, 368332772, 8520024036, 648782020938, 17328016063058, 1457682246017845, 41488753505593111, 3633393326638123182, 105717575729773013067, 9379982461411242670482, 274913106384505454818011
Offset: 1

Views

Author

R. H. Hardin Feb 27 2013

Keywords

Comments

Column 7 of A222649

Examples

			Some solutions for n=3
..0..1..0..0..0..0..0....0..1..0..0..0..0..2....0..0..1..2..1..1..1
..1..1..0..0..0..0..0....1..0..0..0..0..0..0....0..0..0..1..1..1..1
..1..2..0..0..0..0..0....0..0..0..0..0..0..0....0..0..2..1..1..1..1
		
Showing 1-6 of 6 results.