10909384704domain: NAppears in sequencesExponential self-convolution of Pell numbers.at n=16A006646Expansion of 1/((1+2*x)*(1-4*x-4*x^2)).at n=15A110048Number of copies of the star graph S(2,1,1) contained within the n-dimensional hypercube graph.at n=17A352847