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.

A196474 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,2,1 for x=0,1,2,3,4.

Original entry on oeis.org

8, 18, 17, 70, 151, 557, 2351, 6926, 16083, 43523, 126887, 366749, 1196290, 3904083, 12242778, 35866180, 101052064, 296050389, 899499517, 2807496039, 8933240984, 27433666911, 81672960692, 242780272113, 727008678986, 2224880992862
Offset: 1

Views

Author

R. H. Hardin Oct 03 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 3's, every 3 is next to 3 2's, every 4 is next to 4 1's
Column 5 of A196477

Examples

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

Links

A196475 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,2,1 for x=0,1,2,3,4.

Original entry on oeis.org

12, 28, 27, 136, 557, 5955, 38826, 128960, 351238, 1374515, 5837922, 30814351, 167525199, 704218824, 2677605502, 10721905782, 44470299831, 200591500952, 939099305213, 4163383808755, 17808261939750, 75069877372742
Offset: 1

Views

Author

R. H. Hardin Oct 03 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 3's, every 3 is next to 3 2's, every 4 is next to 4 1's
Column 6 of A196477

Examples

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

Links

A196476 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,2,1 for x=0,1,2,3,4.

Original entry on oeis.org

17, 43, 42, 305, 2351, 38826, 299659, 1231691, 5238322, 26129353, 141788701, 1086218484, 7344638998, 38637965991, 209973350431, 1159411392373, 6436583617125, 39481503993996, 240320932969724, 1381481638118489
Offset: 1

Views

Author

R. H. Hardin Oct 03 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 3's, every 3 is next to 3 2's, every 4 is next to 4 1's
Column 7 of A196477

Examples

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

Links

A196473 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,0,3,2,1 for x=0,1,2,3,4.

Original entry on oeis.org

1, 5, 7, 35, 151, 5955, 299659, 8943355, 528624118, 48720477449
Offset: 1

Views

Author

R. H. Hardin Oct 03 2011

Keywords

Comments

Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 3's, every 3 is next to 3 2's, every 4 is next to 4 1's
Diagonal of A196477

Examples

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

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

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