login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A241840 Number of simple connected graphs on n nodes that are not distance-regular. 0
0, 0, 1, 4, 19, 108, 851, 11112, 261076, 11716564 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..10.

Travis Hoppe and Anna Petrone, Encyclopedia of Finite Graphs

T. Hoppe and A. Petrone, Integer sequence discovery from small graphs, arXiv preprint arXiv:1408.3644, 2014

Eric Weisstein's World of Mathematics, Distance-Regular Graph

FORMULA

a(n) = A001349(n) - A241814(n).

CROSSREFS

Sequence in context: A091643 A323620 A306183 * A199318 A117397 A004212

Adjacent sequences:  A241837 A241838 A241839 * A241841 A241842 A241843

KEYWORD

nonn,less

AUTHOR

Travis Hoppe and Anna Petrone, Apr 29 2014

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 25 07:18 EDT 2019. Contains 324347 sequences. (Running on oeis4.)