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 1-2 of 2 results.

A088741 Number of connected strongly regular simple graphs on n nodes.

Original entry on oeis.org

1, 1, 1, 2, 2, 3, 1, 3, 3, 5
Offset: 1

Views

Author

Eric W. Weisstein, Oct 12 2003

Keywords

Examples

			1: K_1 (1 graph)
2: P_2 = K_2 (1 graph)
3: C_3 = K_3 (1 graph)
4: C_4, K_4 (2 graphs)
5: C_5, K_5 (2 graphs)
6: K_6, Ci_6(1,2), K_{3,3} (3 graphs)
Here, Ci_n(...) a circulant graph.
		

Crossrefs

Extensions

a(10) from the Encyclopedia of Finite Graphs (Travis Hoppe and Anna Petrone), Apr 11 2014

A076434 Number of weakly regular simple graphs on n nodes.

Original entry on oeis.org

0, 0, 0, 0, 0, 2, 4, 16, 21, 168, 544, 18992, 389451, 50314864
Offset: 1

Views

Author

Eric W. Weisstein, Oct 11 2002

Keywords

Crossrefs

Cf. A005176 (regular simple graphs on n nodes).
Cf. A294405 (connected weakly regular graphs on n nodes).
Cf. A076435 (strongly regular simple graphs on n nodes).

Formula

a(n) = A005176(n) - A076435(n). - Andrew Howroyd, Sep 03 2019

Extensions

a(10) from Eric W. Weisstein, Oct 30 2017
a(11)-a(14) from Sean A. Irvine, Apr 04 2025
Showing 1-2 of 2 results.