0,3
a(n) = 4 * A001182(n).
As n -> infinity, lim a(n)/(n^2) -> pi.
Table of n, a(n) for n=0..44.
Cf. A001182.
Sequence in context: A239611 A031050 A243980 * A126032 A296819 A034713
Adjacent sequences: A119674 A119675 A119676 * A119678 A119679 A119680
nonn
Tomas Kyselica (Tomas.Kyselica(AT)gmail.com), Jul 29 2006
More terms from Don Reble, Aug 01 2006
approved