The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A232978 Number of proper 3-colorings of the bi-iterative graph family G^4_n. 2
6, 30, 318, 6762, 288354, 24601830, 4198550862, 1433090327658, 978320552816706, 1335732803916035910, 3647440466597769337518, 19919887407714391756372362, 217578288033980580931821414114, 4753070216383849406954016223981350, 207664806338411731603980735696210780942 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..75
T. Kotek, J. A. Makowsky, Recurrence Relations for Graph Polynomials on Bi-iterative Families of Graphs, arXiv preprint arXiv:1309.4020, 2013
CROSSREFS
Cf. A232979.
Sequence in context: A360824 A110374 A360831 * A359882 A332041 A201135
Adjacent sequences: A232975 A232976 A232977 * A232979 A232980 A232981
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Dec 07 2013
EXTENSIONS
a(7)-a(14) from Alois P. Heinz, Dec 21 2013
STATUS
approved

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 May 17 17:07 EDT 2024. Contains 372603 sequences. (Running on oeis4.)