A292002 Number of (undirected) paths in the n-Apollonian network.

30, 1017, 1417992, 1475602431690, 887899295279284798114284, 580352523353299355481324176693737926736684735143

Offset: 1

Author

Eric W. Weisstein, Sep 07 2017

Keywords

• nonn

Comments

a(7) has 96 decimal digits and a(8) has 191 decimal digits. - Andrew Howroyd, Jun 09 2025

Links

• Andrew Howroyd, Table of n, a(n) for n = 1..9
• Eric Weisstein's World of Mathematics, Apollonian Network.
• Eric Weisstein's World of Mathematics, Graph Path.

Crossrefs

Cf. A302718, A307549.

Extensions

a(4) onwards from Andrew Howroyd, Jun 09 2025