A164100 Number of planar graphs with n nodes and chromatic number 3.

1, 3, 16, 82, 524, 4372, 47057, 618235, 9289491

Offset

3,2

Links

Table of n, a(n) for n=3..11.

Crossrefs

Sequence in context: A020871 A037780 A163012 * A041707 A037584 A030983

Adjacent sequences: A164097 A164098 A164099 * A164101 A164102 A164103

Keyword

nonn

Author

Keith Briggs, Aug 10 2009

Extensions

Added term 9289491 (for n=11), Keith Briggs, Aug 25 2009

Status

approved