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 1-7 of 7 results.

A285024 Number of n X 2 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

0, 2, 6, 26, 104, 402, 1578, 6196, 24310, 95446, 374872, 1472938, 5790024, 22768624, 89562540, 352395768, 1386874908, 5459330780, 21494802570, 84648191106, 333419873528, 1313575442496, 5176174458602, 20401118165166, 80425006887898
Offset: 1

Views

Author

R. H. Hardin, Apr 08 2017

Keywords

Comments

Column 2 of A285030.

Examples

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

Links

Crossrefs

Cf. A285030.

A285025 Number of n X 3 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

1, 6, 97, 442, 4892, 26226, 256732, 1544872, 14082710, 91677088, 797188437, 5483647480, 46175013577, 330178554834, 2719685483708, 19987724476418, 162187667549290, 1215451639260848, 9763451129789048, 74199887341866168
Offset: 1

Views

Author

R. H. Hardin, Apr 08 2017

Keywords

Comments

Column 3 of A285030.

Examples

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

Links

Crossrefs

Cf. A285030.

A285026 Number of n X 4 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

2, 26, 442, 6460, 96458, 1449814, 22043878, 336883696, 5171750894, 79634735346, 1229304353554, 19015329654036, 294656614022300, 4573021347213134, 71071712948803680, 1105968089007186270, 17230453143587374712
Offset: 1

Views

Author

R. H. Hardin, Apr 08 2017

Keywords

Comments

Column 4 of A285030.

Examples

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

Links

Crossrefs

Cf. A285030.

A285027 Number of n X 5 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

6, 104, 4892, 96458, 3708321, 85715676, 3064900470, 78636441270, 2682905798545, 73600360297334, 2433998194373248, 69767776892869600, 2261219156494126134, 66739124011458434960, 2135780550666327650338, 64294985432981238003878
Offset: 1

Views

Author

R. H. Hardin, Apr 08 2017

Keywords

Comments

Column 5 of A285030.

Examples

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

Links

Crossrefs

Cf. A285030.

A285028 Number of n X 6 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

12, 402, 26226, 1449814, 85715676, 5075612300, 305391845288, 18488589657334, 1126075588671672, 68870780949040304, 4226950743201669212, 260180180647806426762, 16054794836399649515928, 992844716266821792438782
Offset: 1

Views

Author

R. H. Hardin, Apr 08 2017

Keywords

Comments

Column 6 of A285030.

Examples

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

Links

Crossrefs

Cf. A285030.

A285029 Number of n X 7 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

28, 1578, 256732, 22043878, 3064900470, 305391845288, 40651048407879, 4417815478017558, 572137146947057359, 65494200478482713286, 8342393878477796934994, 986183272505897296786724
Offset: 1

Views

Author

R. H. Hardin, Apr 08 2017

Keywords

Comments

Column 7 of A285030.

Examples

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

Links

Crossrefs

Cf. A285030.

A285023 Number of n X n 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

Original entry on oeis.org

0, 2, 97, 6460, 3708321, 5075612300, 40651048407879, 1063834786036208904, 129443742138071637706453
Offset: 1

Views

Author

R. H. Hardin, Apr 08 2017

Keywords

Comments

Diagonal of A285030.

Examples

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

Crossrefs

Cf. A285030.
Showing 1-7 of 7 results.

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