A359571 Number of (curved) edges after n iterations of constructing circles from all current vertices using only a compass, starting with one vertex. See the Comments.

0, 1, 6, 34, 13730

Offset: 1

Author

Scott R. Shannon, Jan 06 2023

Keywords

• nonn
• more
• hard

Comments

See A359569 and A359570 for further details and images.

Crossrefs

Cf. A359569 (vertices), A359570 (regions), A359619 (k-gons), A359254, A359047, A358783.

Formula

For n >= 3, a(n) = A359569(n) + A359570(n) - 1 by Euler's formula.