A227405 Order of the symmetry group of the densest possible packing of N circles in a larger circle. (If there are different patterns with the same density pick the largest value of the symmetry group order.)

4, 6, 8, 10, 12, 12, 14, 16, 2, 2, 6, 2

Offset: 2

Author

Keenan Pepper, Sep 21 2013

Keywords

• sign
• hard
• more

Comments

a(14) is unknown but conjectured to be 2.

The conjectured sequence is 4, 6, 8, 10, 12, 12, 14, 16, 2, 2, 6, 2, 2, 10, 2, 2, 12, 12, 2...

Links

• Wikipedia, Circle packing in a circle