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.

A197196 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,1,3,2,0 for x=0,1,2,3,4.

Original entry on oeis.org

6, 41, 213, 1283, 7363, 42664, 247053, 1431868, 8291425, 48020216, 278171097, 1611110131, 9331719493, 54050435220, 313063366107, 1813289742008, 10502730648812, 60832658109790, 352347783107193, 2040827608413023
Offset: 1

Views

Author

R. H. Hardin Oct 11 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 1's, every 2 is next to 2 3's, every 3 is next to 3 2's, every 4 is next to 4 0's
Column 5 of A197199

Examples

			Some solutions for n=4
..0..0..0..1..0....1..0..1..1..0....0..0..1..0..1....0..0..0..0..0
..0..0..0..1..0....1..0..0..0..1....1..0..1..0..1....1..0..0..1..1
..0..0..0..0..0....0..0..0..0..1....1..0..0..0..0....1..0..1..0..0
..0..1..1..0..0....0..0..1..1..0....0..1..1..0..0....0..0..1..0..0

Links

A197197 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,1,3,2,0 for x=0,1,2,3,4.

Original entry on oeis.org

9, 85, 621, 5311, 42664, 350711, 2873141, 23497244, 192348965, 1574634137, 12888915436, 105499317727, 863568784956, 7068699587730, 57860690577672, 473616132534126, 3876768069957732, 31733162865254064, 259750677790161795
Offset: 1

Views

Author

R. H. Hardin Oct 11 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 1's, every 2 is next to 2 3's, every 3 is next to 3 2's, every 4 is next to 4 0's
Column 6 of A197199

Examples

			Some solutions for n=4
..0..0..0..1..1..0....0..1..1..0..0..0....1..0..0..0..1..1....0..0..0..1..1..0
..0..0..1..0..0..1....0..0..0..0..0..0....1..0..0..0..0..0....0..1..1..0..0..1
..0..0..1..0..0..1....0..0..0..1..1..0....0..0..1..1..0..0....0..0..0..0..0..1
..0..0..0..0..0..0....0..1..1..0..0..0....0..0..0..0..1..1....0..0..1..1..0..0

Links

A197198 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,1,3,2,0 for x=0,1,2,3,4.

Original entry on oeis.org

13, 178, 1801, 21803, 247053, 2873141, 33176391, 383262156, 4432780869, 51234398070, 592247668688, 6846309893866, 79142347014020, 914861421385891, 10575600998801299, 122251698517890245, 1413202926345456663
Offset: 1

Views

Author

R. H. Hardin Oct 11 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 1's, every 2 is next to 2 3's, every 3 is next to 3 2's, every 4 is next to 4 0's
Column 7 of A197199

Examples

			Some solutions for n=4
..1..1..0..0..0..1..1....0..0..0..0..0..1..1....0..0..0..0..1..1..0
..0..0..1..0..1..0..0....0..0..1..0..1..0..0....0..0..0..0..0..0..0
..0..0..1..0..1..0..0....0..0..1..0..1..0..0....1..1..0..0..0..0..1
..0..0..0..0..0..1..1....0..0..0..0..0..1..1....0..0..1..1..0..0..1

Links

A197195 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,1,3,2,0 for x=0,1,2,3,4.

Original entry on oeis.org

1, 5, 25, 314, 7363, 350711, 33176391, 6258308430, 2359068239358, 1774609159901861
Offset: 1

Views

Author

R. H. Hardin Oct 11 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 1's, every 2 is next to 2 3's, every 3 is next to 3 2's, every 4 is next to 4 0's
Diagonal of A197199

Examples

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

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.