%I #20 Dec 08 2018 20:38:05
%S 1,1,4,4,7,8,10,11,13
%N Column 3 of array in A107431.
%H Ed Pegg Jr., <a href="http://www.mathpuzzle.com/MAA/54-Golf%20Tournaments/mathgames_08_14_07.html">Social Golfer Problem</a>
%Y Cf. A107431.
%K nonn,more
%O 1,3
%A _N. J. A. Sloane_, May 28 2005
%E a(1) and a(8)-a(9) from _Floris P. van Doorn_, Aug 22 2018