A243331 - OEIS

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

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A243331

Number of simple connected graphs with n nodes that are integral and planar.

0

1, 1, 1, 2, 2, 4, 4, 12, 9, 19

(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

CROSSREFS

Cf. A003094 (planar graphs), A064731 (integral graphs).

Sequence in context: A125553 A218147 A226978 * A300218 A138317 A103659

Adjacent sequences: A243328 A243329 A243330 * A243332 A243333 A243334

KEYWORD

nonn,more

AUTHOR

Travis Hoppe and Anna Petrone, Jun 03 2014

STATUS

approved