login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A053421 Number of 5-multigraphs on n nodes. 3

%I #12 Oct 23 2017 13:07:40

%S 1,6,56,2451,533358,661452084,4364646955812,152397092027960154,

%T 28427450083725134688228,28645398830642924774967347088,

%U 157458251108667629202718200130101672,4760428376101385226312810920945121043818096

%N Number of 5-multigraphs on n nodes.

%D F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 1973.

%H Andrew Howroyd, <a href="/A053421/b053421.txt">Table of n, a(n) for n = 1..50</a>

%H Harald Fripertinger, <a href="http://www.mathe2.uni-bayreuth.de/frib/html/book/hyl00_42.html">The cycle type of the induced action on 2-subsets</a>

%H Vladeta Jovovic, <a href="/A063843/a063843.rtf">Formulae for the number T(n,k) of n-multigraphs on k nodes</a>

%Y Column k=5 of A063841.

%Y Cf. A000088, A004102, A053400.

%K easy,nonn

%O 1,2

%A _Vladeta Jovovic_, Jan 11 2000

%E a(12) from _Andrew Howroyd_, Oct 22 2017

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 25 09:25 EDT 2024. Contains 371967 sequences. (Running on oeis4.)