131388domain: NAppears in sequencesNumber of forests of rooted trees containing n nodes not counting the root nodes.at n=13A181360Coefficients in the expansion of Product_{m>=1} (1 - q^(13*m))/(1 - q^m).at n=48A341714Positive integers m with 2*m^2 - 2^4 = x^4 + y^4 for some nonnegative integers x and y with |x-y| > 2.at n=16A343917