1,1
Table of n, a(n) for n=1..4.
Eric Weisstein's World of Mathematics, Apollonian Network
Eric Weisstein's World of Mathematics, Longest Path
Cf. A307457 (longest path lengths).
Sequence in context: A120662 A230815 A099930 * A052208 A234531 A045952
Adjacent sequences: A307546 A307547 A307548 * A307550 A307551 A307552
nonn,more
Eric W. Weisstein, Apr 14 2019
approved