OFFSET
1,1
LINKS
Michel Marcus, Table of n, a(n) for n = 1..53
J. Bourgain and A. Kontorovich, On the Strong Density Conjecture for Integral Apollonian Circle Packings, arXiv:1205.4416 [math.NT], 2012.
R. L. Graham, J. C. Lagarias, C. L. Mallows, Allan Wilks, and C. H. Yan, Apollonian Circle Packings: Number Theory, arXiv:math/0009113 [math.NT], 2000-2003; J. Number Theory, 100 (2003), 1-45.
Eric Weisstein's World of Mathematics, Bowl of Integers
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved