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.

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A243568 Number of simple connected graphs with n nodes that are have no subgraph isomorphic to diamond graph or the bull graph.

Original entry on oeis.org

1, 1, 2, 4, 9, 26, 80, 340, 1690, 11432, 101142, 1228608, 20329150
Offset: 1

Views

Author

Travis Hoppe and Anna Petrone, Jun 06 2014

Keywords

Links

Crossrefs

Cf. A242790 (no diamond subgraphs), A244427 (no bull subgraphs).

Extensions

a(11)-a(13) added using tinygraph by Falk Hüffner, Sep 23 2020

A243795 Number of simple connected graphs with n nodes that have no subgraph isomorphic to the open-bowtie graph or the bull graph.

Original entry on oeis.org

1, 1, 2, 6, 7, 22, 65, 285, 1442, 10106, 92277, 1153548, 19504515
Offset: 1

Views

Author

Travis Hoppe and Anna Petrone, Jun 16 2014

Keywords

Links

Crossrefs

Cf. A242791 (no open-bowtie graphs), A244427 (no bull subgraphs).

Extensions

a(11)-a(13) added using tinygraph by Falk Hüffner, Sep 23 2020

A243798 Number of connected graphs with n nodes that are chordal and have no subgraph isomorphic to the bull graph.

Original entry on oeis.org

1, 1, 2, 5, 6, 12, 25, 55, 126, 304, 745, 1893, 4893, 12916, 34562, 93844
Offset: 1

Views

Author

Travis Hoppe and Anna Petrone, Jun 27 2014

Keywords

Links

Crossrefs

Cf. A048192 (chordal graphs), A244427 (no bull subgraphs).

Extensions

Definition corrected (connected only) by Falk Hüffner, Jul 01 2018
a(11)-a(16) added using tinygraph by Falk Hüffner, Jul 01 2018
Previous Showing 11-13 of 13 results.

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

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