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 1-10 of 11 results. Next

A003400 Number of asymmetric (not necessarily connected) graphs with n nodes.

Original entry on oeis.org

1, 0, 0, 0, 0, 8, 152, 3696, 135004, 7971848, 805364776, 144123121972
Offset: 1

Views

Author

Keywords

Comments

Number of simple graphs g on n nodes with |Aut(g)| = 1.

References

  • F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 1973, p. 220, Section P3.4.
  • N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Crossrefs

Cf. A124059 (connected simple asymmetric graphs).
Cf. A275867 (disconnected simple asymmetric graphs).
Cf. A000088 (simple graphs).

Programs

  • nauty
    for n in {1..10}; do geng -q ${n} | countg -q -a1 | grep altogether | awk '{print $1}'; done # - Sean A. Irvine, Apr 22 2015

Formula

a(n) = A124059(n) + A275867(n).

Extensions

a(8) and a(9) from Eric W. Weisstein, Jun 09 2004
a(10) and a(11) from Zoran Maksimovic, Vladeta Jovovic, Jan 21 2005
a(12) from Sean A. Irvine, Apr 22 2015

A075096 Number of simple graphs g on n nodes with |Aut(g)| = 4.

Original entry on oeis.org

0, 0, 0, 2, 6, 36, 248, 2264, 31754, 710574, 26501530, 1712953820
Offset: 1

Views

Author

Eric W. Weisstein, Aug 31 2002

Keywords

Crossrefs

Extensions

a(8)-a(9) from Eric W. Weisstein, Jun 09 2004
a(10)-a(11) from Maksimovic's preprint added by Max Alekseyev, Apr 26 2010
a(12) from Sean A. Irvine, Feb 09 2025

A075097 Number of simple graphs g on n nodes with |Aut(g)| = 6.

Original entry on oeis.org

0, 0, 2, 2, 2, 8, 38, 252, 3262, 71362, 2626418, 164764114
Offset: 1

Views

Author

Eric W. Weisstein, Aug 31 2002

Keywords

Crossrefs

Extensions

a(8)-a(9) from Eric W. Weisstein, Jun 09 2004
a(10)-a(11) from Maksimovic's preprint added by Max Alekseyev, Apr 26 2010
a(12) from Sean A. Irvine, Feb 10 2025

A075098 Number of simple graphs g on n nodes with |Aut(g)| = 8.

Original entry on oeis.org

0, 0, 0, 2, 4, 14, 74, 623, 7003, 117914, 3079400, 131895854
Offset: 1

Views

Author

Eric W. Weisstein, Aug 31 2002

Keywords

Crossrefs

Extensions

a(8)-(9) from Eric W. Weisstein, Jun 09 2004
a(10)-a(11) from Maksimovic's preprint added by Max Alekseyev, Apr 26 2010
a(12) from Sean A. Irvine, Feb 10 2025

A095348 Number of distinct automorphism group orders for the simple graphs on n nodes.

Original entry on oeis.org

1, 1, 2, 5, 8, 14, 19, 30, 45, 62, 81
Offset: 1

Views

Author

Eric W. Weisstein, Jun 03 2004

Keywords

Comments

It would also be interesting to have the sequence giving the number of different permutation groups arising in this way (not just the distinct orders). - N. J. A. Sloane, Jun 04 2004

Extensions

a(8) and a(9) from Eric W. Weisstein, Jun 06 2004
a(10) and a(11) from Zoran Maksimovic, Vladeta Jovovic, Jan 21 2005

A095853 Number of simple graphs g on n nodes with |Aut(g)| = 12.

Original entry on oeis.org

0, 0, 0, 0, 6, 18, 70, 446, 3924, 54510
Offset: 1

Views

Author

Eric W. Weisstein, Jun 09 2004

Keywords

Extensions

a(10) from Eric W. Weisstein, Jan 14 2025

A095854 Number of simple graphs g on n nodes with |Aut(g)| = 16.

Original entry on oeis.org

0, 0, 0, 0, 0, 6, 20, 164, 1280, 16346
Offset: 1

Views

Author

Eric W. Weisstein, Jun 09 2004

Keywords

Extensions

a(10) from Eric W. Weisstein, Jan 14 2025

A095855 Number of simple graphs g on n nodes with |Aut(g)| = 24.

Original entry on oeis.org

0, 0, 0, 2, 2, 2, 24, 170, 1570, 19844
Offset: 1

Views

Author

Eric W. Weisstein, Jun 09 2004

Keywords

Extensions

a(10) from Eric W. Weisstein, Jan 14 2025

A095856 Number of simple graphs g on n nodes with |Aut(g)| = 36.

Original entry on oeis.org

0, 0, 0, 0, 0, 2, 6, 22, 164, 1550
Offset: 1

Views

Author

Eric W. Weisstein, Jun 09 2004

Keywords

Extensions

a(10) from Eric W. Weisstein, Jan 14 2025

A095857 Number of simple graphs g on n nodes with |Aut(g)| = 48.

Original entry on oeis.org

0, 0, 0, 0, 0, 8, 28, 96, 660, 6284
Offset: 1

Views

Author

Eric W. Weisstein, Jun 09 2004

Keywords

Extensions

a(10) from Eric W. Weisstein, Jan 14 2025
Showing 1-10 of 11 results. Next