%I
%S 0,1,0,5,3,16,23,64,102,251,464,999,1920,4023,7910,16154,32059,64894,
%T 129368,260319,520057,1043669,2086532,4180928,8361875,16741659,
%U 33486337,67014046,134043807,268184694,536423635,1073080023,2146330624
%N Number of compositions of n such that the least part occurs with even multiplicity.
%F G.f.: Sum(Sum(binomial(k, 2*l)*x^(2*k2*l)/((1x)^(k2*l)*(1x^k)), l=1..floor(k/2)), k=1..infinity).
%t CoefficientList[ Series[ Sum[ Binomial[k, 2l] x^(2k  2l)/((1  x)^(k  2*l)(1  x^k)), {k, 34}, {l, Floor[k/2]}], {x, 0, 34}], x] (* _Robert G. Wilson v_, Apr 12 2005 *)
%Y Cf. A096374.
%K easy,nonn,changed
%O 1,4
%A _Vladeta Jovovic_, Apr 12 2005
%E More terms from _Robert G. Wilson v_, Apr 12 2005
