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A049367 Triangle-free planar graphs with n nodes. 0
1, 2, 3, 7, 14, 37, 102, 367, 1532, 8091, 50775, 372417, 3045985, 26989204, 252934543 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..15.

F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version 9766535.

CROSSREFS

Cf. A049368 (inverse Euler transform).

Sequence in context: A246747 A090828 A296416 * A089790 A296417 A296418

Adjacent sequences:  A049364 A049365 A049366 * A049368 A049369 A049370

KEYWORD

nonn,nice,hard,more

AUTHOR

Brendan McKay

EXTENSIONS

a(12)-a(15) added using tinygraph by Falk Hüffner, May 09 2019

STATUS

approved

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Last modified May 31 00:29 EDT 2020. Contains 334747 sequences. (Running on oeis4.)