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 1-5 of 5 results.

A197549 Number of free poly-IH10-tiles (holes allowed) with n cells.

Original entry on oeis.org

1, 1, 5, 16, 62, 276, 1222, 5563, 25805, 120909, 572011, 2727485, 13089106, 63164265
Offset: 1

Views

Author

Joseph Myers, Oct 16 2011

Keywords

Comments

Equivalently, polyhexes where two polyhexes are considered equivalent if and only if they are related by a translation or a rotation of order 3.

References

  • Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Sections 6.2 and 9.4.

Crossrefs

Cf. A000228, A001207, A006535, A057973, A197550, A197551, A197552, A197553, A197554.

A197550 Number of free poly-IH8-tiles (holes allowed) with n cells.

Original entry on oeis.org

1, 3, 7, 28, 99, 433, 1852, 8463, 38798, 181889, 858570, 4093739, 19636172, 94759074
Offset: 1

Views

Author

Joseph Myers, Oct 16 2011

Keywords

Comments

Equivalently, one-sided polybricks, or polyhexes where two polyhexes are considered equivalent if and only if they are related by a translation or a rotation of order 2.

References

  • Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Sections 6.2 and 9.4.

Links

  • Tom McLean, IH8.

Crossrefs

Cf. A000228, A001207, A006535, A057973, A197549, A197551, A197552, A197553, A197554.

A197551 Number of free poly-IH18-tiles (holes allowed) with n cells.

Original entry on oeis.org

1, 1, 4, 10, 37, 147, 637, 2823, 13020, 60649, 286549, 1364667, 6547108, 31586568
Offset: 1

Views

Author

Joseph Myers, Oct 16 2011

Keywords

Comments

Equivalently, polyhexes where two polyhexes are considered equivalent if and only if they are related by a translation, a rotation of order 3 or a reflection or glide reflection in a line perpendicular to the sides of the hexagons.

References

  • Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Sections 6.2 and 9.4.

Crossrefs

Cf. A000228, A001207, A006535, A057973, A197549, A197550, A197552, A197553, A197554.

A197552 Number of free poly-IH19-tiles (holes allowed) with n cells.

Original entry on oeis.org

1, 1, 4, 10, 36, 146, 631, 2815, 12987, 60601, 286376, 1364399, 6546220, 31585133
Offset: 1

Views

Author

Joseph Myers, Oct 16 2011

Keywords

Comments

Equivalently, polyhexes where two polyhexes are considered equivalent if and only if they are related by a translation, a rotation of order 3 or a reflection or glide reflection in a line parallel to the sides of the hexagons.

References

  • Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Sections 6.2 and 9.4.

Crossrefs

Cf. A000228, A001207, A006535, A057973, A197549, A197550, A197551, A197553, A197554.

A197553 Number of free poly-IH12-tiles (holes allowed) with n cells.

Original entry on oeis.org

1, 2, 7, 24, 99, 416, 1852, 8386, 38797, 181530, 858560, 4092031, 19636098, 94750833
Offset: 1

Views

Author

Joseph Myers, Oct 16 2011

Keywords

Comments

Equivalently, polyhexes where two polyhexes are considered equivalent if and only if they are related by a translation or a reflection or glide reflection in a line in one fixed direction perpendicular to the sides of the hexagons.

References

  • Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Sections 6.2 and 9.4.

Crossrefs

Cf. A000228, A001207, A006535, A057973, A197549, A197550, A197551, A197552, A197554.
Showing 1-5 of 5 results.

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

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