%I
%S 2,4,6,8,8,12,10,16,16,20,14,24,16,26,26,32,20,36,22,40,36,38,26,48,
%T 34,44,44,56
%N Number of toothpicks added at nth stage in the toothpick structure of the symmetric representation of sigma in the first quadrant (without the axis x and y).
%C Partial sums give A244362.  _Omar E. Pol_, Oct 18 2014
%C a(n) is also the sum of semiperimeters of the parts of the symmetric representation of sigma(n).  _Omar E. Pol_, Dec 11 2016
%F a(n) = 2*A244361(n).
%F a(n) = A244371(n)/4.  _Omar E. Pol_, Oct 18 2014
%F a(n) = A274919(n)/2.  _Omar E. Pol_, Dec 11 2016
%Y Cf. A000203, A196020, A237270, A237271, A237593, A244360, A244361, A244362, A244370, A244371, A245092, A262626, A274919.
%K nonn,more
%O 1,1
%A _Omar E. Pol_, Jun 26 2014
%E More terms from _Omar E. Pol_, Oct 18 2014
