A085633 Number of not necessarily connected coin graphs, also known as "penny" graphs.

1, 2, 4, 10, 25, 80, 267, 1078

Offset: 1

Author

Leah Hackman (lhackman(AT)cs.ualberta.ca), Martha Lednicky (lednicky(AT)cs.ualberta.ca), Jim Nastos and Rick L. Shepherd, Jul 10 2003

Keywords

• more
• nonn

Comments

The intersection graph of unit disks which are not allowed to overlap.

Crossrefs

Cf. A085632.