%N a(n) = A273059(4n+2).
%C A275916-A275919 are the four rays in A273059. There is a conjectured recursion for these sequences: see A140101.
%H N. J. A. Sloane and Alois P. Heinz, <a href="/A275918/b275918.txt">Table of n, a(n) for n = 0..7571</a>
%Y Cf. A273059, A275915, A275916-A275919.
%A _N. J. A. Sloane_, Aug 28 2016