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A243339 Number of simple connected graphs with n nodes that are distance regular and K_4 free. 0
1, 1, 1, 1, 1, 3, 1, 3, 3, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

COMMENTS

K_4 is the complete graph on four vertices.

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

CROSSREFS

Cf. A241814 (distance regular graphs), A079574 (K_4 free graphs).

Sequence in context: A029154 A211974 A136297 * A244965 A049996 A143908

Adjacent sequences:  A243336 A243337 A243338 * A243340 A243341 A243342

KEYWORD

nonn,more

AUTHOR

Travis Hoppe and Anna Petrone, Jun 03 2014

STATUS

approved

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Last modified March 25 10:23 EDT 2019. Contains 321470 sequences. (Running on oeis4.)