-49203domain: ZAppears in sequencesExpansion of 3*x*(3*x+1)*(2*x-1) / ( (1+x)*(3*x^2+1) ).at n=16A143769n-th derivative of cos(x)^sin(x) at x=0.at n=11A215516n-th derivative of sech(x)^sinh(x) at x=0.at n=11A215679